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Pulse Or Digital Communications > Spread Spectrum Spread SpectrumSpread Spectrum patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/22/07 - 20070268958 - Apparatus for communicating using uwb transmission In one embodiment, an apparatus for communicating using UWB (ultra wideband) transmission includes a transmitter configured to transmit the UWB transmission; a receiver configured to receive the UWB transmission; and a monitor unit configured to present data representing a relationship between two types of parameters of the received UWB transmission. ... 11/15/07 - 20070263701 - Code nco and gps receiver A code NCO is provided which correctly outputs a predetermined code enable signal by executing a simple control, depending on a frequency of a clock signal, with an optimal circuit scale. A multiplexer 1 receives integers of N and M which are relatively prime, and outputs either of them to ... 11/01/07 - 20070253464 - Receiving device, receiving method, and program Provided are a receiving device which improves communication performances by separating signals in CDMA communications using a chaos code, etc. In the receiving device, a receiving unit receives a signal directly spread by a chaos code and transmitted from a transmitting device, a component analyzing unit applies component analysis to ... 10/25/07 - 20070248145 - Enhanced ultra wide band signal detection using an ultra wide band kernel A system and method is provided for improving the operating range for UWB communication systems by increasing the margin between true correlation peaks and false correlation peaks in a received UWB signal. A received signal is first correlated with a UWB kernel before being correlated with the PRN code. The ... 10/18/07 - 20070242730 - Adaptive mostly-digital ultra-wide band receiver A mostly-digital ultra-wideband (UWB) receiver that includes an adaptive combiner (125) having a matched filter with adaptive filter weights selected to maximize the output signal-to-noise (SNR) ratio and be insensitive to noise, channel and timing errors as the adaptive combiner is not dependent on the shape of the transmitted waveform ... 10/18/07 - 20070242729 - Ultra-wideband (uwb) secure wireless device pairing and associated systems Methods and systems are disclosed for ultra-wideband (UWB) secure wireless device pairing. Secure pairing between devices for secure UWB communications is conducted over in-band UWB communications to provide secure pairing without requiring a visual confirmation through a graphical user interface (GUI), in particular, for wireless personal area network (WPAN) communications. ... 10/11/07 - 20070237209 - Space-time coding method for a uwb pulse-type multi-antenna system This invention relates to a space-time coding method for a UWB transmission system including three or four radiative elements. It also relates to a method for transmitting a plurality of data symbols belonging to a PPM modulation constellation or a PPM-PAM composite modulation constellation using this space-time coding. ... 10/11/07 - 20070237208 - System and method for a single stage tunable ultra-wideband pulse generator The present invention provides a single-stage tunable Ultra-Wideband (UWB) pulse generator, by creating and differentiating a variable edge rate signal. Edge rate variability is introduced by first applying a step recovery diode (SRD) to compress the edges of the source and then applying a simple RC network to adjust the ... 10/04/07 - 20070230539 - Wireless communications with auxiliary antennas An auxiliary antenna device includes a baseband interface circuit to communicate with a wireless communications device. The wireless communications device and auxiliary antenna device exchange digital baseband data, and the auxiliary antenna device may augment or complement RF circuitry and antennas in the wireless communications device. ... 09/27/07 - 20070223563 - System and method for terrestrial high-definition television reception An adaptive receiver is disclosed for optimally receiving and processing signals. The receiver utilizes one or more memory blocks to store groups of incoming symbols. The groups of symbols are processed by a channel estimation subsystem to determine channel characteristics. The receiver determines the appropriate demodulation and decoding strategy to ... 08/16/07 - 20070189360 - Method and apparatus for generation of asynchronous clock for spread spectrum transmission A circuit for spread spectrum rate control uses a first interpolator to phase interpolate between a first signal and a second signal and generate a first output signal based on a first control signal. A second interpolator is utilized to phase interpolate between a third signal and a fourth signal ... 08/02/07 - 20070177653 - High-dynamic-range ultra wide band transceiver An UWB Transceiver for Multi-Band OFDM communication including an antenna switch (342), a receive front end and down-converter (303), an up-converter and power amplifier (305), and a frequency synthesizer (211). The transceiver achieves high dynamic range by employing a synthesizer (211) with very low spurious components and a receive front ... 07/19/07 - 20070165693 - Methods and apparatus for reducing discrete power spectral density components of signals transmitted in multi-band wideband communications systems Methods and apparatus for processing data for transmission that reduces discrete power spectral density (PSD) components of a transmitted multi-band wideband signal including the processed data are disclosed. Each band of the multi band wideband signal includes waveforms corresponding to a different band of frequencies. Data is processed for transmission ... 07/05/07 - 20070153875 - Ultra-wideband pulse modulation system and method An ultra-wideband pulse modulation system and method is provided. One method of the present invention includes transforming data into a ternary data set with data being represented with states of zero, positive one and negative one. The modulation and pulse transmission method of the present invention enables the simultaneous coexistence ... 07/05/07 - 20070153874 - System and method for cross-modulation interference reduction for pulse-position modulated ultrawideband signals The present invention provides a novel technique for reducing the effect of CMI for PPM UWB signals. The system and method in accordance with the present invention greatly improves the performance of receivers and eliminates the possibility of catastrophic errors. The proposed technique introduces a variable modulation index instead of ... 07/05/07 - 20070153873 - Fast locking mechanism for channelized ultrawide-band communications A receiver for acquisition and lock of an impulse radio signal comprising an adjustable time base to output a sliding periodic timing signal having an adjustable repetition rate, and a decode timing modulator to output a decode signal in response to the periodic timing signal. The impulse radio signal is ... 06/28/07 - 20070147478 - Signal adjustment receiver circuitry Systems and methods for adjusting a signal received from a communication path are disclosed. A receiver can receive a signal from a communication path which attenuates at least some frequency components of the signal. The receiver can include an equalization block that adjusts at least some of the frequency content ... 06/28/07 - 20070147477 - Novel pulse generator for ultra-wide-band modulating systems and modulating systems using it A pulse generator circuit is provided. The pulse generator circuit has an input adapted to receive an input electrical quantity and an output at which an output electrical quantity is made available. A transfer characteristic establishes a relationship between said input and said output electrical quantities. The pulse generator circuit ... 06/28/07 - 20070147476 - Wireless data communication method via ultra-wide band encoded data signals, and receiver device for implementing the same This invention concerns a wireless data communication method, wherein a transmitter device having a first wide band antenna transmits ultra-wide band encoded data signals to a receiver device having a second wide band antenna for receiving the direct and/or multiple path coded data signals. The transmitted data is defined by ... 06/28/07 - 20070147475 - Transmitting method, receiving method, transmitting device, receiving device and tranceiving device A transmitting device of the present invention comprises an encoder (20), a transmitting unit (100) including and a pulse generator (30) and a parallel-to-serial converter (50), a transmitting control unit (40), and an a antenna (90) The pulse generator (30) comprises a first pulse train generator (31), a second pulse ... 06/21/07 - 20070140318 - Tiered subscription broadcast system A broadcast system is disclosed that allows a broadcaster to provide multiple levels of subscription services. Subscribers have the option of listening to fewer (or no) commercials if they pay a higher fee, or listening to more commercials if they pay a lower (or no) fee. Commercials can be demographically ... 06/21/07 - 20070140317 - Differential phase modulated multi-band ultra-wideband communication system A method for conveying, a receiver for receiving and a signal that contains a differential phase modulated multi-band high-speed data stream are provided. A preferred embodiment is directed to a multi-band UWB signal where each band spans about 500 MHz to 1 GHz. Within each such band, a flexible modulation ... 06/07/07 - 20070127553 - Code reuse multiple access for satellite return link This invention is a multiple access communication technique by which a multitude of transmitters communicate with receivers using direct sequence spread spectrum signaling. The direct sequence codes are reused by a large number of simultaneous transmitters, so the system is named Code Reuse Multiple Access (“CRMA”). This reuse method requires ... 05/31/07 - 20070121705 - Clear channel assessment method and system for ultra wideband ofdm An ultra-wideband clear channel assessment system uses a double-window energy technique for energy detection, which indicates a clear or busy channel. ... 05/24/07 - 20070116097 - Ultra-wideband communication through twisted-pair wire media Methods and apparatus that transmit ultra-wideband signals through twisted-pair wire media are provided. One method includes transmitting an ultra-wideband signal through the twisted-pair wire media at dissimilar time periods. Another method includes transmitting an ultra-wideband signal through the twisted-pair wire media at dissimilar radio frequencies. Yet another method includes transmitting ... 05/24/07 - 20070116096 - Impulse signal acquisition method and apparatus An impulse signal acquisition method and apparatus are provided. The impulse signal acquisition apparatus includes: an impulse generator which varies a pulse width of an impulse signal used for transmitting data according to a predetermined control signal to generate the impulse signal; and a controller which applies a pulse width ... 05/24/07 - 20070116095 - Method for transmission in a cellular single frequency network, a base station, a mobile terminal and a mobile network therefor The invention concerns a method for transmission in a cellular single frequency network comprising at least one antenna (1A-1D. 2A-2D) in each cell with a pilot adapted channel multiplexing structure, whereby frequency blocks (FB1-FB3) of adjacent OFDM subcarriers with the pilot spreading sequence length fitting into the frequency bandwidth of ... 05/24/07 - 20070116094 - Signal arrangement for multi-bandwidth ofdm system A pilot structure, a method, and a receiver for multi-carrier cellular communications communication system include a network element and a user equipment. The network element is configured to transmit a pilot sequence. The user equipment is configured to detect a pilot sequence comprising a primary synchronization sequence at predetermine number ... 05/24/07 - 20070116093 - Method and apparatus to perform surgical reactive jamming while maintaining simultaneous tactical communications A Method and Apparatus to Perform Surgical Reactive Jamming while Maintaining Simultaneous Tactical Communications is disclosed. The system provides an enhancement to surgical reactive jammers that combines near-real-time jamming capability with the additional feature of allowing tactical communications. The tactical communications transmissions are compressed and packetized such that they can ... 05/24/07 - 20070116092 - Relay station and method for enabling reliable digital communications between two nodes in a wireless relay based network A relay station (606, 806a, 806b, 906a, 906b, 1006 and 1106) and a method (700) are described herein that enables reliable digital communications to occur between two nodes in a wireless relay based network (600, 800, 900, 1000 and 1100). The wireless relay based network includes a first node (602, ... 05/24/07 - 20070116091 - Spread code assigning method in code spread radio communication using a plurality of transmission/reception antennas and code spread radio communication system using the same A receiver 102 connected to a plurality of reception antennas 121 and 122 includes a propagation path correlation estimation circuit 108. The propagation path correlation estimation circuit calculates a correlation value of each propagation path between each of transmission antennas 111 and 112 and each of the reception antennas and ... 05/17/07 - 20070110126 - Radio communication system and communication apparatus The communication apparatus employing the non-coherent scheme is used in the UWB-impulse radio system. In order to make it possible to reliably realize long-distance communication, while observing the reference values of the average radiation power and the peak radiation power, and also to realize high-speed short-distance communication, the apparatus includes ... 05/17/07 - 20070110125 - Transmitting device, receiving device, and communication system A transmitting device includes a continuous pulse generating unit, modulating unit, and output unit. The continuous pulse generating unit continuously generates multiple impulse waveforms at arbitrary time intervals but shorter than the pulse string repetition cycle. The modulating unit modulates continuous pulses generated by the continuous pulse generating unit, using ... 05/03/07 - 20070098046 - Semiconductor integrated circuit device A processing load of a high performance application processing such as a voice, an image and the like is reduced, and a processing capacity of a base band processing is improved. A semiconductor integrated circuit device used in a mobile communication system such as a cellular phone is provided with ... 05/03/07 - 20070098045 - Detection of time-frequency codes using a spectrogram A frequency hopping pattern of a frequency hopping signal is detected by use of spectrogram-generating software in a digital storage oscilloscope. By using a spectrogram, a hopping pattern can be determined without having to demodulate the signal, recover the phase or frequency of the carrier, determine optimal sample timing, or ... 05/03/07 - 20070098044 - Digital low-power cmos pulse generator for ultra-wideband systems A low-power pulse generator is provided for use in ultra-wideband (UWB) systems. In one embodiment, the UWB pulse generator includes four pulse generators, such as digital triangular pulse generators, that generate Gaussian-like pulses of alternating polarity at different time offsets. The resulting four Gaussian-like pulses are combined to generate a ... 04/26/07 - 20070091984 - Dual-carrier modulation decoder Communications systems are disclosed which comprise system and methods which, in some embodiments, include a data input; a decoding function, which is adapted to receive a first data element and a second data element from the data input and decode the first data element and second data element, and a ... 04/26/07 - 20070091983 - Method and system for power controlled effective allocation of sub-bands in ultra-wideband communication A power controlled sub-band assignment and power allocation among users in a multiband UWB system aims to reduce power consumption without compromising performance. The overall transmit power is minimized under the practical constraints, including packet error rate, transmission rate, and FCC regulations. To insure the system feasibility in variable channel ... 04/26/07 - 20070091982 - Clock signal controlling device A clock signal generating section generates a clock signal of a predetermined frequency. A frequency spreading section spreads the frequency of the clock signal generated by the clock signal generating section based on a predetermined spread ratio. A controlling section sets the spread ratio of the frequency spreading section in ... 04/19/07 - 20070086509 - Multiple-input multiple-output ultra-wide band communication method and device using hermite pulses A method of sending ultra-wide band signals via a plurality of sending antennas includes a phase for sending training sequences followed by a phase for sending data after which each antenna of the plurality of sending antennas sends a waveform using a Hermite pulse that is unique and orthogonal to ... 04/12/07 - 20070081578 - Nyquist folded bandpass sampling receivers with narrow band filters for uwb pulses and related methods Nyquist folded bandpass sampling receivers are disclosed that utilize narrow band filters in parallel with wideband filters to enhance reception of ultra wideband (UWB) pulses. The addition of the narrow band filter facilitates the reception of ultra wideband signal pulses and, therefore, extends the Nyquist folding bandpass sampling receiver to ... 04/12/07 - 20070081577 - Pulse-based communication The invention relates to a method for broadband communication. The method includes transmitting a sequence of pulses or impulses at a pulse repetition frequency from a first communication device to another device via a wireless link. The method further includes adjusting the pulse repetition frequency based on channel delay spread ... 04/05/07 - 20070076782 - Method and system for controlling a notching mechanism A circuit (100) is provided for notching an incoming wireless signal. The circuit comprises: a notching mechanism (110) for receiving an incoming signal and generating a notched signal having reduced power at the notch frequency (320), the notch frequency being adjustable in response to a notching control signal; a signal ... 03/29/07 - 20070071067 - Secure network using orthogonal frequency division multiplexing spread spectrum communications Described are a method and system for secure transmission of data through a network. A subcarrier sequence for data transmission is generated. The subcarrier sequence designates at least one subcarrier from a number of orthogonal subcarriers for each of a plurality of intervals in a time sequence. The subcarrier sequence ... 03/15/07 - 20070058693 - Tone sensing and nulling in frequency-hopped multicarrier system A method and system for removing frequencies interfering with a UWB OFDM receiver from transmission frequencies of the UWB communication. A sensing mechanism is added to the receiver that develops an energy histogram for the frequencies in a received signal and develops a tone mask for masking the interfering frequencies. ... 03/08/07 - 20070053412 - Data transfer system, wireless communication device, wireless communication method, and computer program In a data transfer system in which wireless data transmission is carried out between a first device and a second device that each has a UWB wireless device, the data transfer system includes a ranging unit that is provided in the UWB wireless device of at least one of the ... 03/08/07 - 20070053411 - Generator of repetitive sets of spreading sequences A generator of repetitive sets of spreading sequences comprising means (20) for counting and for forming an address and a table (30) containing L sets of S sequences, wherein the address contains q+log2S bits, wherein the q bits are used for selecting one set among L (L=2q) sets and wherein ... 03/08/07 - 20070053410 - Method and system for optimizing the use of the radio spectrum and computer program product therefor A system for scanning a frequency spectrum to detect usage thereof includes an ultra-wideband receiver for performing the scanning, and cooperates with a spectrum usage estimator module and a radio controller unit. The spectrum usage estimator module derives from the scanning performed via the ultra-wideband receiver information as to usage ... 03/08/07 - 20070053409 - Wideband communication method The invention relates to a communication method including: establishing a wideband communication link between a first device and a second device, transmitting a first set of consecutive data bits from said first device to said second device by means of a first set of pulses, and transmitting a second set ... 03/01/07 - 20070047624 - Mixed voice and spread spectrum data signaling with enhanced concealment of data Systems, methods, and devices for mixed voice and spread spectrum data signaling with enhanced concealment of data are disclosed. Audible artifacts may be reduced or suppressed in order to improve the audible quality of the sound. The distortion to the audio may be kept just below perceptibility, yet the data ... 03/01/07 - 20070047623 - Method and apparatus for generating a pseudorandom binary sequence using a linear feedback shift register A method and apparatus are provided for generating a code by quickly computing a state of a Linear Feedback Shift Register (LFSR) in a mobile communication system, in which a code for the communication system is generated including an n-stage LFSR and operating in sleep mode and active mode set ... 03/01/07 - 20070047622 - Data generator having linear feedback shift registers for generating data pattern in forward and reverse orders Some embodiments of the invention includes a data generator. The data generator includes a data generating circuit having a combination of linear feedback shift registers and shift registers for generating a pseudo-random data pattern in a first order. The data generator also includes a recovery circuit for allowing the data ... 03/01/07 - 20070047621 - System and method for calibrating an analog signal path in an ultra wideband receiver A system (500) and method (400) are presented for calibrating an analog signal path (200) associated with an Ultra Wideband (UWB) receiver (103). The analog signal path includes a plurality of analog gain stages (210, 212-214, 216), a local oscillator mixer stage (211), a compensation stage (218), and a converter ... 02/22/07 - 20070041426 - Data transfer system, wireless communication device, wireless communication method, and computer program In a data transfer system in which wireless data transmission is carried out between a first device and a second device that each has a UWB wireless device, the data transfer system includes a ranging unit that is provided in the UWB wireless device of at least one of the ... 02/08/07 - 20070030882 - User equipment for controlling transmission power levels A user equipment (UE) for controlling transmission power levels in a system employing a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication comprises a measuring device configured to receive, during a first time slot, a communication including a power level and measure the power level ... 02/08/07 - 20070030881 - Signal transmission method A data transmission method superimposes a spread code onto data in order to synthesize a first signal. The method changes the switching frequency of a switching power supply based on the first signal, transmitting the second signal to a plurality of semiconductor apparatuses (satellite apparatuses) via an output line of ... 02/01/07 - 20070025420 - Transmission and detection in ultrawide band communications A method of transmitting information on ultra-bandwidth systems is provided. The method can double the data rate of existing methods. The method comprises sending and receiving an ultra-wideband pulse. The ultra-wideband pulse comprises at least a dual pulse (two sub-pulses) of time Tw and is sent during a frame interval ... 02/01/07 - 20070025419 - All digital implementation of clock spectrum spreading (dither) for low power/die area A digital circuit configured to spread a clock train spectrum includes a clock configured to generate the clock train, and a variable divider configured to divide the frequency of the clock train by a temporally-varying-divider value to modulate the clock train and generate a dithered clock train. The circuit further ... 02/01/07 - 20070025418 - Overlaying digital signals on analog wireless communication signals A method and system of providing digital communications over frequencies concurrently utilized for analog communications. In one embodiment, the method (400) includes the step of establishing (410) a digital channel including two or more analog channels that are concurrently used to provide analog communications. A spread spectrum digital waveform is ... 02/01/07 - 20070025417 - System and method for mitigating filter transients in an ultra wideband receiver A system (600) and method (500) are presented for mitigating a transient in processing a received signal (710) in a signal path associated with an Ultra Wideband (UWB) receiver. An impending processing event associated with processing the received signal is detected. A processing element (201, 202, 203, 204) capable of ... 01/25/07 - 20070019711 - Spread spectrum clock generator having an adjustable delay line A system and method are provided for performing a spread spectrum clock generation, where the system includes self-adjusting delay line configured to spread the spectrum of a fixed circuit using a fixed clock frequency and a delay circuit configured to generate an adjustment signal to the delay line by adding ... 01/25/07 - 20070019710 - Systems and method for generating a common preamble for use in a wireless communication system A UWB system comprising a plurality of piconets, wherein each piconet uses a different code to generate a preamble for use in communicating with a plurality of remote communication devices. The preamble can be generated from the combination of repeated versions of the code, negative versions of the code, and ... 01/18/07 - 20070014333 - Uwb communication device and uwb communication method The present invention provides a UWB communication device and a UWB communication method with which the communication speed can be improved, and with which accurate sending and receiving of data and a lower power consumption can be achieved. A communication device in accordance with the present invention employs a sending/receiving ... 01/18/07 - 20070014332 - Ultra-wideband communications system and method An ultra-wideband communications network and methods for communication are provided. In one embodiment, an ultra-wideband transceiver transmits video data that is in a lossy or lossless compression format. The lossy or lossless format may be a wavelet-based format. The transmitted ultra-wideband signal may be transmitted in a single or in ... 01/18/07 - 20070014331 - Ultra-wideband communications system and method An ultra-wideband communications network and methods for communication are provided. In one embodiment of the present invention, a method of encoding data is provided. Generally, the method comprises the steps of calculating a data transformation, encoding a first portion of the data transform with a first forward error correction code ... 01/04/07 - 20070002931 - Wireless communication system using an impulse signal train, a wireless transmission apparatus, a wireless reception apparatus, a wireless transmission method, and a wireless reception method A wireless communication system performs high-speed and low-speed transmission of information signals for short-distance communication and long-distance communication by using a short spread code and a long spread code, respectively. A wireless transmission unit includes an interface, a buffer, a spreading processor, a UWB wireless transmitter, a controller, a data ... 01/04/07 - 20070002930 - Novel ultra wideband waveform generator circuit The invention relates to a novel ultra wideband (UWB) waveform generator circuit (1) placed on a substrate, with transmission lines, loads and ports; wherein the circuit takes as input a waveform and generates as output the derivative of said waveform, characterised in that it has two microstrip transmission lines (2,3) ... 12/28/06 - 20060291536 - Ultra-wideband communication through a wire medium Methods and apparatus for creating, transmitting and receiving an ultra-wideband signal through wire media are presented. One embodiment of the invention may create, transmit, and receive an ultra-wideband signal that uses radio frequency(s) that are not used by other signals present on wire media within a wire network of interest. ... 12/21/06 - 20060285578 - Robust non-coherent receiver for pam-ppm signals A robust method and system for communicating via ultra-wideband (UWB) radio transmission signals over multi-path channels with a very broad range of delay spread. The system includes an optimized non-coherent receiver structure of low complexity and potentially very low power consumption, while offering robust error rate performance for a wide ... 12/21/06 - 20060285577 - Mapping radio-frequency noise in an ultra-wideband communication system A system and method for mapping. radio-frequency (RF) noise, and estimating channel quality in a multi-channel ultra-wideband communication system is provided. One method includes placing a plurality of time bins within a plurality of time frames and assigning a plurality of UWB communication channels comprising selected time bins. RF noise ... 12/14/06 - 20060280226 - Base station synchronization using multi-communication mode user equipment A method for time synchronizing base stations in an asynchronous cellular communication system via multi-communications mode user equipment is described. The method includes receiving time-of-day in a synchronous cellular communication signal with the user equipment operable in a synchronous cellular communications mode. Alternatively, time-of-day is received from a non-cellular system ... 12/07/06 - 20060274816 - Spread spectrum signal demodulating method and apparatus A spread spectrum signal demodulating method whereby spread-code synchronous acquisition and carrier synchronous acquisition are performed using FFT at high speed, wherein a received signal, of which the carrier wave is modulated with a signal obtained by spectrum-spreading data with a spread code, is subjected to the FFT and the ... 12/07/06 - 20060274815 - System and method for selecting a strongest signal across clock domains in an ultra wideband receiver A system and method for determining a strongest of a radio signal received on at least two signal paths in an Ultra Wideband (UWB) receiver includes determining a signal metric associated with the radio signal in a first signal path and a second signal path and establishing a candidate for ... 11/30/06 - 20060268959 - Uwb mcsk/bppm wireless communication system and method for increased information rate Disclosed herein is an Ultra WideBand (UWB) M-ary Code Shift Keying (MCSK)/Binary Pulse Position Modulation (BPPM) wireless communication system and method. The system includes a transmitter and a receiver. The transmitter selects a specific TH code using MCSK according to an additional data stream, performs BPPM on a desired signal ... 11/30/06 - 20060268958 - Methods and apparatus for spread spectrum generation using a voltage controlled delay loop Methods and apparatus are provided for generating a frequency with a predefined offset from a reference frequency. A spread spectrum generator circuit is disclosed that comprises a voltage controlled delay loop for generating a plurality of signals having a different phase; and at least one interpolator for processing at least ... 11/09/06 - 20060251148 - System and method for transmitting ultrawide bandwidth signals A method is provided for generating a multiple band ultrawide bandwidth signal. In this method, an ultrawide bandwidth devices provides a first reference signal having a first reference frequency, and a second reference signal having a second reference frequency that is different from the first reference frequency. The device generates ... 10/26/06 - 20060239333 - Wireless communication system and related methods A method of operating a wireless mesh network comprises generating a pseudorandom sequence element in a transmitting device and a receiving device of the network using information shared by the transmitting and receiving devices. The pseudorandom sequence element is then used to calculate a communication channel/timeslot assignment for communication between ... 10/19/06 - 20060233220 - Wireless telephone with spectral spread in sampled voice A cordless telephone handset and a cordless telephone base station both comprise a transmitter unit and a receiver unit is presented whereby the communication between said handset and said base station is established over a radio link utilizing an analogue based spread spectrum communication technique whereby at the transmitter unit ... 09/21/06 - 20060209923 - Method of transmitting feedback information in a multi-input, multi-output (mimo) system A method of transmitting feedback information in a Multi-Input, Multi-Output (MIMO) system is disclosed. In the method, a mobile station (MS) which determines to transmit feedback information and feedback type to a base station (BS) without solicitation from the BS, wherein the feedback type is transmission antenna type, and transmits ... 09/21/06 - 20060209922 - Single-pulse and multi-pulse transmitted reference impulse radio systems with energy detecting receivers A transmitted reference ultra-wide band communication signal embodied in an electromagnetic wave and configured to communicate a data value includes a first frame having a first reference pulse and a first data pulse. The first reference pulse has a reference polarity and the first data pulse has a data polarity. ... 09/14/06 - 20060203890 - Radio lan system implementing simultaneous communication with different types of information and communication method for the same A radio LAN (Local Area Network) system includes an access point and a mobile or a fixed station each having a physical layer implemented by a direct spread spectrum system. The LAN system uses different spread codes, maintains transmission power semi-fixed, and selects a frequency and a frequency band in ... 09/14/06 - 20060203889 - Ultra-narrow bandwidth radio frequency communications link The present invention is a dramatically enhanced RF link for low-data-rate applications (1-100 bps), using one or more transmitters to communicate with one or more receivers, at dramatically enhanced ranges. The receiver of the present invention can rapidly search, detect, and lock in on narrow band signal transmissions, that may ... 09/14/06 - 20060203888 - Interface randomization methods and systems employing the same Some representative embodiments are directed to systems and methods for randomizing data communicated across a digital interface. In some representative embodiments, a PN sequence is applied to a series of shift registers. An array of exclusive-or gates is provided to scramble each bit of the current data word using a ... 09/14/06 - 20060203887 - Method of processing a sampled spread spectrum signal stream In accordance with the present invention, a method of processing a sampled signal stream containing at least one spread spectrum signal is provided together with a receiver, computer, computer-readable storage medium and computer program for the same. The method comprises the steps of processing samples at a first bit level ... 09/07/06 - 20060198425 - Method for transmitting uwb pulse sequences in a cost-efficient manner The present invention relates to a method for transmitting data in the form of at least one modulated reference pulse sequence included in a transmitted signal Tsg. The method according to the invention includes at least one signal transmission step in the course of which the number of pulses included ... 08/31/06 - 20060193372 - System and method for generating shaped ultrawide bandwidth wavelets An ultra-wide band (UWB) waveform generator and encoder for use in a UWB digital communication system. The UWB waveform is made up of a sequence of shaped wavelets. The waveform generator produces multi-amplitude, multi-phase wavelets that are time-constrained, zero mean, and can be orthogonal in phase, yet still have a ... 08/31/06 - 20060193371 - Synchronization and channel estimation with sub-nyquist sampling in ultra-wideband communication systems The system and method for estimating impulse response of a wideband communication channel represented as linear combination of L time-shifted pulsed P1(t) with propagation coefficients a1, comprising functionalities or steps for obtaining an ultrawideband signal (y(t) of FIG. 1) received over the channel, filtered (h(1) of FIG. 1) with low ... 08/24/06 - 20060188003 - Communication of interference mitigation related information between wireless devices Transmitting information is disclosed. Interference mitigation information associated with mitigating interference with a victim wireless device is obtained. The interference mitigation information is transmitted. ... 08/24/06 - 20060188002 - Method and apparatus for decoding an incident uwb signal with inter symbol interferences The method is for decoding an incident UWB signal including successive incident pulses respectively received during successive Pulse Repetition Periods, each incident pulse including one transmitted symbol among M possible symbols, and the transmitted symbol being corrupted by Inter Symbol Interferences (ISI). The method includes determining a correlation matrix (Γ), ... 08/24/06 - 20060188001 - Methods and apparatus for reducing discrete power spectral density components of signals transmitted in wideband communications systems Methods and apparatus for reducing discrete power spectral density (PSD) components of wideband signals transmitting blocks of data are disclosed. Discrete components are reduced by acquiring N symbols of pseudo-random data, each symbol having K bits; selecting one bit from each of the acquired symbols to generate N selected bits; ... 08/17/06 - 20060182166 - Multi-antenna communication system a) transmit a series of Nseq learning pulses from each emission antenna to all reception antennas. b) for each reception antenna j, estimate the M composite responses of series of emitted pulses that arrive at this reception antenna j, each composite response being estimated by eliminating the effects of other ... 08/10/06 - 20060176934 - Serial transmission of data using spread-spectrum modulation for enhancing electromagnetic compatibility An apparatus for serial transmission of data over a transmission path in a vehicle uses spread-spectrum modulation to enhance the electromagnetic compatibility with other electrical and electronic components in the vehicle. The apparatus includes a transmitter that subjects a clock signal having a predetermined frequency and phase to spread-spectrum modulation ... 08/10/06 - 20060176933 - Clock generating method and clock generating circuit In a clock generating circuit, while a PLL (Phase-Locked Loop) circuit and a modulator are employed, when a frequency dividing ratio of a feedback-purpose frequency divider in the PLL circuit is changed in accordance with modulation data produced based upon a modulation profile of the modulator to perform a frequency ... 08/10/06 - 20060176932 - Spread spectrum clock generation circuit and a method of controlling thereof A spread spectrum clock generation circuit and a controlling method thereof are disclosed, which provide clocks having less jitter and ideal spread spectrum and enable a reduction in circuit scale and in power consumption. To this end, a current control type modulator 19a is equipped with a current source Ia ... 08/03/06 - 20060171445 - Methods and systems for detecting and mitigating interference for a wireless device In at least some embodiments, a method for mitigating interference between an Ultra Wideband (UWB) device and a non-UWB device is provided. The method includes, dynamically determining if a frequency channel associated with the non-UWB device is being used. If the frequency channel is being used, the method adjusts a ... 08/03/06 - 20060171444 - Apparatus and method for generating spreading code using jacket matrix and code channel spreading device using the same Provided is a spreading code generating apparatus using a jacket matrix, a method thereof, and a code channel spreading device using the same. The present research provides an apparatus for generating a spread quasi-orthogonal function, which is a spreading code, by using a jacket matrix and a known short bent ... 07/27/06 - 20060165155 - System and method for ultra-wideband (uwb) communication transceiver An ultra-wideband (UWB) transceiver for use in UWB communication includes a voltage-controlled oscillator (VCO) configured to periodically and sequentially generate a series of base frequencies based on a predetermined sequence and a waveform generator to generate carrier waves based on the generated base frequencies. ... 07/20/06 - 20060159159 - Wireless communication system and device for controlling the peak to average power ratio A wireless communication system, to control a peak power to an average power ratio because an amplifier characteristic of the wireless communication system include non-linear characteristic if input signal large the amplifier makes distortions. A wireless communication system comprises for suppressing a peak power to an average power ratio to ... 07/20/06 - 20060159158 - Contactless connector systems A system and method uses near-field or inductively coupled UWB (Ultra Wide Band) systems to implement high speed electrical data connectors without the need for a direct electrical connection. A data connector system has a first connector portion and a second connector portion. The first connector portion comprises a UWB ... 07/20/06 - 20060159157 - Digital spread spectrum clock signal generation To generate a spread frequency spectrum clock signal in a digital approach permitting to make the key parameters independent of process, temperature and supply voltage variations, a digital phase locked loop is used. In a first step (a), a clock signal at a maximum clock frequency is generated. In a ... 07/13/06 - 20060153281 - Method and apparatus for automatic jammer frequency control of surgical reactive jammers a Method and Apparatus for Automatic Jammer Frequency Control of Surgical Reactive Jammers is disclosed. The system and method to autonomously and selectively jams frequency-hopping signals in near real-time. The system has the ability to automatically detect short duration signals (such as those output from frequency hoppers), to automatically determine ... 07/13/06 - 20060153280 - Method and apparatus for surgical high speed follower jamming based on selectable target direction A Method and Apparatus for Surgical High-speed Follower Jamming Based on Selectable Target Direction is disclosed. The system and method of the present invention automatically detects and jams sudden, short duration communications signals in near real time, in a compass direction selected by the user on the battlefield. Such a ... 07/13/06 - 20060153279 - Sub-banded ultra-wideband communication system A wireless communication system performs high-speed transmission of information signals by using a multi-band approach. Each band spans about 500 MHz. A flexible modulation scheme within each band employs time, amplitude and phase modulations, allowing adaptation of the data rate to the sub-band conditions. In addition, pseudo-random frequency sequence is ... 07/06/06 - 20060146913 - Tdma, spread spectrum rf agile filtered signal transmission Communication and broadcast system for Time Division Multiple Access (TDMA), spread spectrum, filtered signal and cross-correlated in-phase and quadrature-phase baseband signals for Radio Frequency (RF) tunable or RF agile transmitters. A selector and connection device provides selection and connection of one or more of the TDMA, spread spectrum, filtered or ... 06/29/06 - 20060140250 - Time resource allocation method of ultra wideband communication system A time resource allocation method of ultra wideband (UWB) communication system is disclosed wherein transmission power is adjusted in a UWB communication system to appropriately allocate time resources of data transmission period. The present invention is such that determination is made as to whether there are time resources for allocation ... 06/29/06 - 20060140249 - Pulse waveform producing method The present invention forms, in UWB communications in which a pulse of short duration is transmitted, a transmission signal with a desired frequency characteristic by adjusting the shape of a pulse signal used in data transmissions. As a result, radio interference with other wireless systems in UWB communications is reduced. ... 06/22/06 - 20060133453 - Data transfer system The present invention provides a data transfer system that performs a data transfer between a master receiver and at least one slave receiver each of which has a built-in memory storing data therein and is identical in configuration. Upon the data transfer, such at least one slave receiver in which ... 06/22/06 - 20060133452 - Time domain spreading method and apparatus A time domain spreading method and apparatus for a UWB receiver are provided. Wherein, a series of received symbol signals are received by the UWB receiver, and transformed by the fast Fourier transform to obtain a series of transformed signals Y(m) according to one of the received symbol signals. Y(m)=Y1(m)+jYQ(m), ... 06/22/06 - 20060133451 - Use of pseudo-random frequency sequence to reduce pico-net interference in a multi-band uwb network A wireless communication system and method is provided that uses a pseudo-random frequency sequence to reduce pico-net interference in a multi-band ultra wideband network. Pulse are transmitted using a pseudo-random sequence of frequencies such that neighboring pico-nets using the same technique can reduce band overlap thereby reducing mutual interference. ... 06/08/06 - 20060120433 - Communications systems and methods This invention generally relates to networks of communications devices, in particular ultra wideband (UWB) communications devices. An ultra-wideband (UWB) network comprising a plurality of UWB devices each forming a node of said network, pairs of said UWB devices being configured for communication with one another using one of a plurality ... 06/01/06 - 20060114968 - Wireless communications device with white gaussian noise generator and related methods A wireless communications device may include a wireless transmitter, a modulator connected to the wireless transmitter, and a white Gaussian noise generator connected to the modulator. The white Gaussian noise generator may include at least one pseudorandom number generator, and a fast Walsh transform module for generating white Gaussian noise ... 05/25/06 - 20060109888 - Apparatus and method for calculating and implementing a fibonacci mask for a code generator An apparatus and method for calculating and implementing a Fibonacci mask for a code generator is disclosed herein. The first step receives a desired code offset from a reference code state in a Fibonacci field. Next, a field vector in a Galois field with the same code offset sought in ... 05/18/06 - 20060104332 - Apparatus and method for defining symbol timing window and capturing signal An apparatus and a method of defining symbol timing window and capturing signal are provided for a UWB receiver. The present invention is characterized in delaying a start point of a symbol timing window for a preset time T. According to the symbol timing window, a serial symbol signals are ... 05/11/06 - 20060098714 - Spread spectrum clock generator and method for generating a spread spectrum clock signal A spread spectrum clock generator (SSCG) and method of generating a spread spectrum clock (SSC) signal, in which the SSCG may include a controller outputting a given modulation voltage signal based on a difference between an average frequency of a first feedback signal and a comparison frequency signal input thereto, ... 05/11/06 - 20060098713 - Ultra wideband receiver architecture using high order gaussian pulses and method of operation An ultra wideband (UWB) receiver system operable to process a high order Gaussian pulse includes an integrator group, a correlator circuit and a comparator circuit. The integrator group includes an input coupled to receive the high order Gaussian pulse and an output coupled to the correlator circuit, the integrator group ... 04/27/06 - 20060088082 - Method and system for fast acquisition of ultra-wideband signals A system and method are provided that can detect any part of a multipath impulse radio signal. More specifically, the method compares a template pulse train and the multipath impulse radio signal to obtain a comparison result. The system performs a threshold check on the comparison result. If the comparison ... 04/27/06 - 20060088081 - Transmit-rake apparatus in communication systems and associated methods A transmit-rake apparatus includes at least one pulse generator that provides a plurality of pulses with selected signal properties so as to improve the signal-to-noise ratio at a receiver. The signal properties may include pulse timing, amplitude, polarity, and pulse shape. The transmit-rake apparatus may use a multipath analyzer, receive ... 04/27/06 - 20060088080 - Low-interference uwb wireless communication system and processing method thereof and storage medium recorded program of the same The proposed invention relates to the interference-free Ultra-Wide Band (UWB) wireless communication system using spreading codes with low correlation duration or Zero Correlation Duration (ZCD) property, the communication processing technique of the system and the record media of the program through the computer. ... 04/20/06 - 20060083289 - Spread spectrum clock signal generation system and method A system and method for generating a clock signal having spread spectrum modulation. The method involves generating a clock signal by generating edge positions for edges of the clock signal from a digital representation of a timing for each edge to impart spread spectrum modulation to the clock signal. A ... 04/13/06 - 20060078038 - Analog signal separator for uwb versus narrowband signals A system, method, and computer program product for removing “narrowband” interference from a broader spectrum containing a UWB signal, in a receiver of the UWB signal. The RFI is extracted from a broader spectrum to remove interference from the UWB signal, by employing an impulse response in a radio front-end ... 04/06/06 - 20060072648 - Clock generator and method of generating a spread spectrum clock (ssc) signal A clock generator and method of generating a spread spectrum clock (SSC) signal, in which a delay cell array (DCA) control signal may be output based on one of a received spread spectrum clock generator (SSCG) signal and a feedback signal. The SSC signal may be generated based on at ... 04/06/06 - 20060072647 - Hybrid communication and broadcast systems Hybrid communication ad broadcast systems for broadband, ultra wideband and ultra Narrowband (UWN) reconfigurable, interoperable communication and broadcasting system architectures. Combinations and hybrids of ultra wideband (UWB), ultra narrowband (UNB) and efficient broadband wireless, baseband, intermediate frequency (IF) and radio frequency (RF) implementations for Bit Rate Agile (BRA) reconfigurable and ... 04/06/06 - 20060072646 - Broadband, ultra wideband and ultra narrowband reconfigurable interoperable systems Broadband, ultra wideband and ultra narrowband (UWN) reconfigurable, interoperable communication and broadcasting system architectures, combinations and hybrids of ultra wideband (UWB), ultra narrowband (UNB) and efficient broadband wireless, baseband, intermediate frequency (IF) and radio frequency (RF) implementations for Bit Rate Agile (BRA) reconfigurable and interoperable systems, Adaptive Modulation and Coding ... 03/30/06 - 20060067381 - Spectrum re-use employing transfer domain communications systems A system and method for spectrum re-use employing transfer domain communications systems is disclosed. An adaptive waveform technique reconfigures its fundamental modulation waveform depending on the spectral environment. Spectral interference, or other friendly user's presence, is estimated using general spectral estimation techniques. Once the frequency bands containing strong interference or ... 03/30/06 - 20060067380 - Device and method for generating a pseudorandom sequence of numbers A device for generating a pseudorandom sequence of numbers includes a feedforward coupler, which has a plurality of memory units, and a feedback coupler connected between an input and an output of the feedforward coupler. The feedback coupler includes a changeable feedback characteristic and is embodied to change the feedback ... 03/23/06 - 20060062278 - Ultrawideband radio transmitter, ultrawideband radio receiver, and ultrawideband radio transmission/reception system A device is provided that creates pulse signals for UWB with a simplified circuit and performs radio transmission/reception in ultrawideband. The signal processor converts transmission data into a transmission baseband and then transmits it to the Manchester converter circuit. The Manchester converter circuit creates Manchester codes, which are converted from ... 03/23/06 - 20060062277 - Ultra-wideband signal amplifier Amplifier for an ultra-wideband (UWB) signal receiver having a signal input (15) for receiving an ultra-wideband signal which is sent by a transmitter (1) and which is transmitted in a sequence of transmission channels (Ki) (which each have a particular frequency bandwidth) which has been agreed between the transmitter (1) ... 03/16/06 - 20060056491 - Spread spectrum clock generator A spread spectrum clock generator comprises a conventional closed-loop VCO and an open-loop VCO where both are coupled to the same point of the PLL. Both VCOs comprise a V-to-I converter followed by a current-controlled oscillator and are identical in design but only the open-loop VCO receives the modulation current ... 03/16/06 - 20060056490 - Spread spectrum clock generator and method of generating spread spectrum clock A clock circuit for generating a spread spectrum clock signal with reduced amplitude electromagnetic interference (EMI) spectral components is provided where the clock circuit includes a delay line circuit, the delay line circuit providing a spread spectrum clock signal from a reference clock signal in response to a modulation signal, ... 02/23/06 - 20060039449 - Ultra-wideband receiver and transmitter A waveform-adaptive ultra-wideband (UWB) transmitter and noise-tracking UWB receiver for use in communications, object detection and radar applications. In one embodiment, the output of an oscillator is gated by a low-level impulse generator either directly or through an optional filter. In a special case of that embodiment wherein the oscillator ... 02/23/06 - 20060039448 - Devices and methods for ultra-wideband communications A method for generating an ultra-wideband communications signal is described. The method includes generating a piecewise linear ultra-wideband baseband signal comprising at least one pulse, based on an inputted data signal; generating a carrier tone having a carrier frequency suitable for wireless transmission; and upconverting the baseband signal with the ... 02/23/06 - 20060039447 - Impulse radio systems with multiple pulse types A method signals in an ultra-wide bandwidth network. A data symbol is generated. A set of reference pulses is transmitted for the data symbol. Each reference pulse is of a different type. One data pulse is also transmitted for each reference pulse. A type of each data pulse is identical ... 02/16/06 - 20060034348 - Asynchronous communication system for remote monitoring of objects or an environment A system provides for remote monitoring using asynchronous code division multiple access (CDMA) communication techniques between a base station and one or more transponders. Each transponder is attached or otherwise associated with an object or an environment to be monitored. Upon receipt of an interrogation signal, a transponder generates and ... 02/16/06 - 20060034347 - System for spatial analysis of a physical quantity The invention concerns a system wherein the spatial values (S1 to Sn) of the physical quantity are represented by measurement pulses (I1 to In) whereof the temporal ordering represents said values. The system comprises a plurality of processing units (U1 to Un) for processing said measurement pulses. They are arranged ... 02/02/06 - 20060023770 - Spread spectrum clock generator A spread spectrum clock generator comprising a phase-locked loop circuit and a modulation circuit. The phase-locked loop circuit receives a reference signal at a reference frequency and outputs an output signal at an output frequency periodically varying in a range between upper predetermined boundary and lower predetermined boundary frequencies. The ... 01/19/06 - 20060013284 - Phase stuffing spread spectrum technology modulation A method of phase stuffing spread spectrum modulation by varying the frequency of an original clock in order to spread the peak energy content highly concentrated in the spectrum at a single original frequency. The spectral energy spreads around such original frequency thereby lowering its peak value. The time position ... 01/12/06 - 20060007988 - Apparatus, system and method for flip modulation in an impulse radio communications system Apparatuses, systems and methods for transmitting and receiving modulated impulse radio signals. An impulse radio receiver includes a time base, a precision timing generator, a template generator, a delay, first and second correlators, a data detector and a time base adjustor. The time base produces a periodic timing signal that ... 01/12/06 - 20060007987 - Spread spectrum clock generator Disclosed is a spread spectrum clock generator which includes: a first delay control type oscillator that variably controls an oscillation period at a control period interval according to a control signal; a control circuit; a maximum modulation value determination circuit that determines a maximum modulation value from a predetermined value, ... 01/12/06 - 20060007986 - Packet detection during multiband receiver synchronization Detecting a packet transmission is disclosed. A first plurality of detection metrics is determined using a first signal having a first synchronization waveform received on a first band. A second plurality of detection metrics is determined using a second signal having a second synchronization waveform received on a second band. ... 01/12/06 - 20060007985 - Saturation handling during multiband receiver synchronization Receiving a signal is disclosed. A signal received in a first band is amplified. It is determined if the amplified signal satisfies a saturation condition. A change to a second band is triggered based at least in part on the amplified signal satisfying the saturation condition. ... 12/29/05 - 20050286610 - Self organization of wireless sensor networks using ultra-wideband radios A novel UWB communications method and system that provides self-organization for wireless sensor networks is introduced. The self-organization is in terms of scalability, power conservation, channel estimation, and node synchronization in wireless sensor networks. The UWB receiver in the present invention adds two new tasks to conventional TR receivers. The ... 12/22/05 - 20050281316 - Method for transmitting/receiving operation mode information in a broadband wireless access communication system A method for transmitting/receiving operation mode information in a broadband wireless access (BWA) communication system is disclosed. A transmission side maps a predetermined preamble pattern to an operation mode, and upon a change in operation mode, transmits a preamble pattern corresponding to the changed operation mode. A reception side receives ... 12/22/05 - 20050281315 - Spread spectrum verification circuit A method for verifying a spread spectrum function and a spread spectrum verification circuit are provided. Comparing an output frequency of the spread spectrum function with a reference frequency for the spread spectrum function tests an upper bound of the spread spectrum function. If the output frequency increases above the ... 12/15/05 - 20050276310 - Method for ultra wideband communication, and ultra wideband transmitter and receiver A method and apparatus for ultra wideband (UWB) communication are provided. The method includes generating a UWB signal having different types of data segments composed of at least one bit, the data segments being mapped to different central frequencies according to the types of the data segments, transmitting the UWB ... 12/08/05 - 20050271119 - Suppression of even-numbered harmonic distortion in a non-linear element In a method for suppression of even-numbered harmonic distortion which occurs in a non-linear element 4, a signal x(n) is linked to a pseudo random noise sequence r(n), and is thus spread, before passing through the non-linear element 4. After passing through the non-linear element 4, the signal y*(n) is ... 12/08/05 - 20050271118 - Method and device for characterizing uwb pulse sequences The method according to the invention includes a signal characterization step, in the course of which Np detection windows Dj (for j=1 to Np) encompassing predetermined time chips are examined by performing correlations over said detection windows Dj of the received signal with at least a first and a second ... 12/01/05 - 20050265428 - Low power, high resolution timing generator for ultra-wide bandwidth communication systems An ultra wide bandwidth communications system, method and computer program product including an ultra wide bandwidth timing generator. The timing generator includes a high frequency clock generation circuit having low phase noise; a low frequency control generation circuit; and a modulation circuit coupled between the high frequency clock generation circuit ... 12/01/05 - 20050265427 - Up converted prn generator An up converted PRN generator modulates a PRN sequence logically onto a carrier signal to produce a wideband signal having a flat spectrum in a frequency range well above zero. A carrier frequency at an integer multiple of a clock signal and the output of a PRN generator clocked by ... 11/24/05 - 20050259720 - Ultra wide bandwidth spread-spectrum communications system An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The communication system uses baseband codes formed from time shifted and inverted wavelets to encode data on a RF signal. Typical wavelet pulse durations ... 11/17/05 - 20050254554 - Method and apparatus for multi-band uwb communications A method and device for transmitting information over a first medium include allocating for signal transmission, each of a plurality of frequency sub-bands of an ultra-wide band spectrum and sending over the first medium an ultra-wide band transmission including the information. The ultra-wide band transmission is performed by sending a ... 11/17/05 - 20050254553 - Orthogonal pulse polarity modulation Orthogonal pulse polarity modulation involves wireless communication in which the polarity of modulating pulses are set responsive to positive and negative character values of a corresponding code sequence. In a described implementation, data is converted to chip waveforms, spectrum lines are removed, and pulses are appropriately shaped. For example, a ... 11/10/05 - 20050249264 - Wireless communication system, wireless transmitter, wireless receiver, wireless communication method, wireless transmission method and wireless reception method The transmitting side encodes a digital signal to be transmitted by using a code not containing any DC component, and transmits the digital signal without using any carrier. The receiving side performs decoding corresponding to encoding for the received signal, and restores the original digital signal. ... 11/03/05 - 20050243893 - Method and system for single ended to differential ended demodulation Provided are a method and system for demodulating a signal. The method includes receiving the signal along first and second signal paths within a demodulator having a common starting point. Impedance values along each of the paths are changed alternately in synchronism. ... 10/20/05 - 20050232336 - Versatile system for signal shaping in ultra-wideband communications The present invention provides a versatile system for selectively altering or shaping transmission signals in an ultra-wideband communications system (100). The system provides a serial to parallel conversion function (102) with a serial data input (116). The serial to parallel conversion function converts the serial data and outputs it in ... 10/06/05 - 20050220173 - Methods and systems for frequency shift keyed modulation for broadband ultra wideband communication A system and method for transmitting a UWB or WB signal over a wireless network using a CP-FSK modulated carrier waveform. The system and method comprises selecting a wireless communication channel that is free of at least one of interference and multipath distortion and transmitting a CP-FSK modulated signal over ... 10/06/05 - 20050220172 - Methods and apparatus for generating and processing wideband signals having reduced discrete power spectral density components Methods and apparatus for generating and processing wideband signals having reduced discrete power spectral density (PSD) components are disclosed. A wideband signal having reduced discrete PSD components is achieved by generating data symbols responsive to data for transmission, transforming one or more of the data symbols into a frame including ... 09/29/05 - 20050213636 - User equipment using combined closed loop/open loop power control At a first communication station, communications from a second communication station are received. The first station transmits power commands based on in part a reception quality of the received communications. From the first communication station, a first communication having a transmission power level in a first time slot is transmitted. ... 09/29/05 - 20050213635 - Ultra-wideband receiver In an ultra-wideband receiver for receiving discontinuous pulse signals and for demodulating the receive signals, an amplifier amplifies signals received, and a demodulator demodulates the amplified signals. A controller controls the demodulator and the amplifier based on the signals demodulated by the demodulator. The controller sends a signal to the ... 09/15/05 - 20050201446 - Dynamic differentiated link adaptation for ultra-wideband communication system Optimum usage of time diversity and significantly higher data rates are achieved by utilizing an adaptive Ultra-wideband impulse radio (UWB IR) transmission scheme based upon information about the channel state at a particular time instant. Through the use of channel state information, the transmission scheme is adjusted for the particular ... 09/08/05 - 20050195885 - Efficient spreader for spread spectrum communication systems A spreading system and method for CDMA applications that requires fewer integer multiplications. User data is spread using real or complex integer based spreading codes of length SF to SFmax chips. At least one of the codes is of the form jn·v[n] where v[n] is a spreading code. The invention ... 09/08/05 - 20050195884 - Method for evaluating spread spectrum radar and spread spectrum radar A spread spectrum radar performs a target detection process in a first mode. The target detection process includes performing a slide unit detection plural times while sliding transmission code by predetermined number of chips. The slide unit detection includes transmitting the transmission code and performing a sliding-correlation calculation between the ... 09/08/05 - 20050195883 - Method and apparatus for ultra wideband communication A method and apparatus for Ultra Wideband (UWB) communication, wherein in a UWB transmission method, a codeword stream is generated by performing spread spectrum used in Direct Sequence Code Division Multiple Access (DS CDMA) on a bitstream, followed by performing Orthogonal Frequency Division Multiplexing (OFDM) modulation .on the codeword stream. ... 09/01/05 - 20050190818 - Pn code generator, gold code generator, pn code despreader, method for generating pn code, method for generating gold code, method for despreading pn code and computer program Shift code patterns at four continuous phases obtained by dividing 15 shift code patterns given to the respective flip-flops of a linear feedback shift register of degree 4 into four parts are stored in a code memory (11). Besides, mask code patterns to shift a phase of a PN code ... 09/01/05 - 20050190817 - System and method for unified channelization for multi-band ofdm A system and method for channelization and data multiplexing in ultra-wideband (UWB) wireless communication system is described. The spectrum allocated for UWB in a multi-bank OFDM (orthogonal frequency division multiplex) system is subdivided into various bands. A set of time frequency codes (TFC's) is defined, wherein each code specifies one ... 08/25/05 - 20050185697 - Ultra wide band (uwb) synchronisation search The present invention relates to ultra wide band (UWB) applications such as radar, position tracking and communications for example Ground Penetrating Radar (GPR) and Wireless Personal Area Networking (WPANs). The present invention provides an apparatus for synchronising a receiver to a received UWB signal having a known hopping code, the ... 08/18/05 - 20050180490 - Spread spectrum type clock generation circuit for improving frequency modulation efficiency The present invention provides a spread spectrum type clock generation circuit whose EMI for peripheral equipment is reduced. The clock generation circuit comprises a phase-locked loop circuit and a clock modulation circuit. The clock modulation circuit comprises a ΔΣ modulator, to frequency-modulate an output clock by modulating the frequency division ... 08/18/05 - 20050180489 - Spread spectrum system communication unit and its method for establishing high speed synchronization A device for spread spectrum communication is provided which enables synchronization at a high-speed even if the carrier frequency and the phase are not known precisely on the receiving end. The device for spread spectrum communication includes a toggle detecting unit and a demodulating unit. The toggle detecting unit detects ... 08/11/05 - 20050175068 - Randomly changing pulse polarity and phase in an uwb signal for power spectrum density shaping A method eliminates spectral lines and shapes the power spectral density of an ultra bandwidth signal. First, a train of pulses is generated. The pulses are then modulated in time according to symbols. A polarity of the pulses is inverted randomly before transmitting the pulses as an ultra wide bandwidth ... 08/04/05 - 20050169349 - Method for communicating scrambling code id in mobile communication system Disclosed is a method for transmitting a channel signal in a base station of a mobile communication system which scrambles a common channel signal using a primary scrambling code for identifying the base station. The method comprises determining an identifier (ID) of a secondary scrambling code, upon receipt of a ... 07/28/05 - 20050163193 - Radio communication system, transmitter, receiver and radio communicating method A radio communication system having a radio transmitter and a radio receiver and adopting multiple carrier modulation and code spreading modulation methods is disclosed. The radio communication system comprises a selecting unit provided in the radio transmitter or the radio receiver, for selecting an interleaving mode out of plural interleaving ... 07/14/05 - 20050152435 - Encoded data A data communications architecture employing serializers and deserializers that reduces data communications latency. In an illustrative implementation, the data communications architecture communicates data across communications links. The architecture maintains various mechanisms to promote data communications speed and to avoid communication link down time. These mechanisms perform the functions including but ... 07/07/05 - 20050147154 - Receiver for receiving a spectrum dispersion signal A receiver for the CDMA system, in order to reduce a power consumption during a suspension period of intermittent receiving operation, monitors a suspension period t1 by means of a low-power timer 51 so that a VC-TCXO 1, a reference signal group generation unit 2 and a receiving unit 3 ... 06/30/05 - 20050141595 - Communication device and communication method A communication device performs a radio communication in an ultra wideband with the use of the impulse radio system. The communication device includes a receiver. The receiver is equipped with antennas, a correlation circuit, and a CPU. The antennas receive send signals from a transmitter. The correlation circuit detects a ... 06/30/05 - 20050141594 - Hybrid spread spectrum radio system Systems and methods are described for hybrid spread spectrum radio systems. A method includes modulating a signal by utilizing a subset of bits from a pseudo-random code generator to control an amplification circuit that provides a gain to the signal. Another method includes: modulating a signal by utilizing a subset ... 06/30/05 - 20050141593 - Wireless multi-hop system with macroscopic multiplexing A method, device, and system in which radio links between relays and users are optimized separately from the links between relays and base stations and in which multiple simultaneous data streams between relays and base stations are created. The system includes transceivers of at least three kinds with two kinds ... 06/23/05 - 20050135458 - System and method for distance assistance and coaching A distance assistance system including a plurality of remote locations connected to a central location through a network, wherein an operator at the central location selects a particular remote location to monitor. Each remote location includes a number of video cameras, the video signals generated by the video cameras is ... 06/23/05 - 20050135457 - Ultra wide bandwidth transmitter with tone grouping and spreading A method and system communicates ultra wide bandwidth signals using orthogonal frequency division multiplexing modulation. QPSK input symbols are frequency interleaved. The frequency interleaved symbols are spread over a plurality of tones, and the tones are modulated for transmission over an ultra wide bandwidth channel. When the tones are received, ... 06/16/05 - 20050129092 - Ultra-wideband communication system and method The present invention provides systems and methods for communication between ultra-wideband (UWB) devices. In general, the UWB device may characterize the attenuation, and other characteristics of the communication environment. Using these characteristics the UWB device can adapt various communication parameters to improve the communication quality. The UWB device may use ... 06/09/05 - 20050123025 - Wireless local area network (wlan) using universal frequency translation technology including multi-phase embodiments and circuit implementations Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal generator, a demodulation/modulation facilitation module, and a MAC interface. The WLAN receiver ... 06/09/05 - 20050123024 - Ultra-wideband communication system and method The present invention provides systems and methods for communication between ultra-wideband (UWB) devices. In general, the UWB device may characterize the attenuation, and other characteristics of the communication environment. Using these characteristics the UWB device can adapt various communication parameters to improve the communication quality. The UWB device may use ... 06/09/05 - 20050123023 - Multicarrier orthogonal spread-spectrum (moss) data communications Systems and methods are described for multicarrier orthogonal spread-spectrum (MOSS) data communication. A method includes individually spread-spectrum modulating at least two of a set of orthogonal frequency division multiplexed carriers, wherein the resulting individually spread-spectrum modulated at least two of a set of orthogonal frequency division multiplexed carriers are substantially ... 06/02/05 - 20050117628 - Method for generating communication signal sequences having desirable correlation properties and system for using same A method for generating code sequences having good correlation properties comprising steps of selecting a code length comprising a number of chips, selecting a ruler which defines the position of non-zero values within the chips, and overlaying the non-zero values with an amplitude pattern. ... 06/02/05 - 20050117627 - Method for the determination of a maximum or a minimum The invention, which relates to a method for ascertaining a maximum or a minimum from a set of comparative values in a communication receiver, is based on the object of specifying a method for ascertaining the maximum or minimum in which, following a comparison operation, the result comprises the maximum ... ### FreshPatents.com Support - Terms & Conditions |