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Pulse Or Digital Communications > Spread Spectrum > Direct Sequence > Receiver > Having Specific Code Synchronization Having Specific Code SynchronizationHaving Specific Code Synchronization 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.11/15/07 - 20070263705 - Method and apparatus for detecting spreading-code synchronization for spectrum spreading signals A spreading-code synchronization detection method for a spectrum spreading signal that increases the sensitivity of spreading-code synchronization detection and in which a spreading-code synchronization detection is applied to a spectrum spreading signal obtained by spectrum-spreading data, having a bit transition period equal to a multiple of one period of a ... 11/08/07 - 20070258511 - Adaptive code generator for satellite navigation receivers A satellite navigation device including a receiver having an adjustable code generator is described. The adjustable code generator is configurable to generate a set of spread-spectrum code signals. Each spread-spectrum code signal has a respective length corresponding to a repetition period. The set of spread-spectrum code signals includes first and ... 10/11/07 - 20070237212 - Method and apparatus for new cell identification in a wcdma network with a given neighbor set A method and an apparatus for new cell identification in a WCDMA network with a given neighbor set are described. Aspects of a system for new cell identification in a WCDMA network with a given neighbor set may include a baseband processor that enables determination of a primary synchronization position ... 10/04/07 - 20070230545 - Method and apparatus for improved l2 performance in dual frequency semi-codeless gps receivers This invention relates to improving the signal-to-noise ratio of semi-codeless tracking by presenting a method and apparatus which employs an optimal W-code timing pattern, and/or provides signal-to-noise gain by adding L1 and L2 W-code bit timing estimate signals before combining the L1 W-code estimate signal with the L2 W-code estimate ... 09/13/07 - 20070211792 - Method and receiver capable of increasing acquisition efficiency in a code division multiple access communication system A method capable of increasing acquisition efficiency in a code division multiple access (CDMA) communication system includes receiving a first signal, generating a second signal by performing a Fourier transform operation for the first signal, determining a plurality of shift signals generated by shifting the second signal a first frequency ... 07/12/07 - 20070160120 - Method for code-alignment for dsss signal processing An embodiment generally relates to a method of processing direct-sequence spread spectrum signals for temporal alignment between a received direct sequence spread spectrum (DSSS) signal and a local reference signal. The method includes receiving the received DSSS signal with bandwidth to resolve at least N samples per code chip and ... 07/12/07 - 20070160119 - Umts receiver symbol synchronization The present invention relates to a method of performing time drift compensation in a receiver (200) and a receiver (200) for performing time drift compensation. The basic idea of the invention is that a signal is received at the receiver. A control pulse is produced after a certain number of ... 07/05/07 - 20070153880 - Dynamic switching of carrier tracking loops without loss of tracking information A method of dynamic switching of a plurality of carrier loops in a radio receiver, wherein each channel comprises a plurality of carrier tracking loops; and wherein each carrier tracking loop is configured to track a radio source. Each carrier tracking loop includes a predetermined accumulation period. The method comprises ... 06/28/07 - 20070147484 - Apparatus and method for signal matching in a communication system A signal matching apparatus and method in a communication system are provided. For signal matching, a transmitter generates a synchronization code for synchronization acquisition, includes the synchronization code on a center frequency subcarrier of a transmission signal, and sends the transmission signal to a receiver. The receiver detects the synchronization ... 06/28/07 - 20070147483 - Bit synchronization in a communications device Systems and techniques are disclosed relating to communications. The systems and techniques involve the synchronizing to a signal having a plurality of bits by computing energy for a plurality of different phase offset signal portions, generating a ratio from the signal portion with the highest computed energy and the signal ... 06/21/07 - 20070140323 - Coarse bin frequency synchronization in a communication system For frequency bin error estimation, multiple hypotheses are formed for different frequency bin errors, pilot offsets, or combinations of frequency bin error and pilot offset. For each hypothesis, received symbols are extracted from the proper subbands determined by the hypothesis. In one scheme, the extracted received symbols for each hypothesis ... 06/21/07 - 20070140322 - Apparatus and methods for timing recovery in a wireless transceiver Apparatus and methods for use in a wireless communication system are disclosed for recovery of timing tracking in a device, such as a wireless transceiver, after decoding errors occur due to incorrect timing tracking. In particular, the disclosed methods and apparatus recover timing tracking by monitoring a decoded signal in ... 05/31/07 - 20070121708 - Discriminator function for gps code alignment Embodiments of the present invention pertain generally to methods and systems of processing a global positioning satellite (GPS) signal. More particularly, embodiments of the present invention provide an improved discriminator function that utilizes the early, prompt, and late correlator values. For example, the improved discriminator function may be normalized based ... 05/24/07 - 20070116104 - Receiving apparatus, communication apparatus and control apparatus using the same The present invention conducts the initial synchronization acquisition of the rapid and high precision ultra-wideband signal without complicatedness of hardware and increase in power consumption. For this purpose, a communication apparatus for exchanging information with an intermittent pulse train signal searches all phases among the pulses in the predetermined search ... 05/03/07 - 20070098053 - Multicarrier pilot structure for reliable frame detection A pilot structure, a method, and a receiver for multi-carrier cellular communications defining a specific Time Division Multiplexer/Multiplexing pilot pattern and pilot sequence for a sub-frame with short system information. A primary synchronization sequence is configured to be transmitted every predetermine number of sub-frames in a defined bandwidth. A primary ... 05/03/07 - 20070098052 - System and method for adaptive broadcast radar system An adaptive broadcast radar system for tracking targets is disclosed. The radar system includes a transmitter having sub-apertures and a receiver having sub-apertures. The transmitter sub-apertures generate and code a signal waveform. The signal waveform is coded with data about the transmitter, including the degrees of freedom. The receiver receives ... 04/12/07 - 20070081579 - Intelligent code tracking for spread spectrum systems A code-tracking system includes a loop filter, which receives an early/late error signal and outputs a loop filter error signal. An error scaling device receives the loop filter error representing an update and provides a code tracking adjustment signal. A controller monitors a frequency of updates and/or a number of ... 04/05/07 - 20070076787 - Pseudorandom noise lock detector A device for detecting data synchronization in data communications includes pseudorandom noise (PN) lock circuits (101, 113, 127). The PN lock circuits (101, 113, 127) receive an input data stream (109). Each of the PN lock circuits (101, 113, 127) is time offset with respect to the other PN lock ... 03/22/07 - 20070064776 - Apparatus for and method of correlating to rising chip edges A receiver for position-determining ranging signals transmitted by earth-orbiting satellites uses a set of accumulators, each of which accumulates signal samples corresponding with a position along the rising edges of incoming PRN pulses. An MMT processor calculates the rising edges of the direct path component of the received signal, selects ... 03/15/07 - 20070058699 - Bit synchronization method and system for a gps A bit synchronization method and system for a GPS, which receives a satellite signal sent by a satellite to accordingly produce a synchronous signal. Each data bit of the satellite signal consists of N CA-codes. A data buffer receives and stores the data bits of the satellite signal. A matched ... 02/08/07 - 20070030887 - Cdma frequency acquisition using a simplified crystal oscillator that is not temperature compensated CDMA code channels are acquired using a crystal oscillator that is not temperature compensated and that generates a tuning signal with relatively large frequency error (e.g., +/−5 ppm). Channel acquisition is first attempted at no offset from a start frequency that is obtained by fitting an ideal temperature/frequency error curve ... 02/01/07 - 20070025428 - Wcdma terminal baseband processing module having cell searcher module A baseband processing module includes TX processing components, a processor, memory, an RX interface, and a cell searcher module. The TX processing components receive outbound data, process the outbound data to produce a baseband TX signal, and output the baseband TX signal to a RF front end of the RF ... 12/07/06 - 20060274821 - Bit synchronization detection methods and systems Methods and systems for detecting bit synchronization boundary in a received signal. A counter is set for defining a bit boundary of the received signal. Transitions in the received signal are detected and compared with the counter value as the transitions are expected to occur only at the bit boundary. ... 11/30/06 - 20060268965 - Method and system for rds decoder for single chip integrated bluetooth and fm transceiver and baseband processor A method and system for an RDS decoder for single chip integrated Bluetooth and FM Transceiver and baseband processor are provided. The RDS decoder may have two phases, an acquisition phase and a decoding phase. During an acquisition phase, synchronization of a bit stream may be established based on detecting ... 10/19/06 - 20060233226 - Method and apparatus for cell search in a w-cdma system A technique is provided for correcting frequency offset during the cell search process in a W-CDMA system. A plurality of control words are defined, and with each of the control words, correlating the received slot signals with the primary synchronization code to generate a correlation result. A correlation peak is ... 10/19/06 - 20060233225 - Frequency synchronization apparatus and frequency synchronization method A first frequency synchronization unit (103) corresponds to the frequency synchronization apparatus of the present invention. A higher apparatus that is, for example, a wireless receiver supplies a reception signal to the first frequency synchronization unit (103) via an A/D converter (101) and an orthogonal detector (102). A synchronization symbol ... 10/12/06 - 20060227855 - Method and device of cell search for mobile terminal in tdd-cdma system A cell-searching method and device for a mobile terminal in TDD-CDMA system, in which the mobile uses the special power pulse of using the downlink pilot slot (DwPTS) to acquire coarse synchronization before using conventional correlation cell searching to refine the search. Due to the coarse synchronization, the conventional correlation ... 10/05/06 - 20060222056 - Base station device A base station device capable of easily conducting large-scale searches for a number of channels by execution of software is provided. A first filtering section filters reception data to which FFT has been applied by multiplying the reception data by rectangular wave window. A second FFT section applies FFT to ... 09/28/06 - 20060215739 - System and method for making correlation measurements utilizing pulse shape measurements A receiver utilizes an array of complex accumulation registers to form an image of the average chip shape or, as appropriate, chip edge shape, of the received signal over a specified period of time as a time series of complex power measurements. The receiver divides the length of the chip ... 09/07/06 - 20060198428 - Spread spectrum transmission systems A code phase signalling module arranged to provide code phase signalling to assist in signal acquisition of direct sequence spread spectrum signalling received by a receiver module from a transmitter module, wherein the code phase signalling is arranged to be used by the receiver module to synchronise the phase of ... 08/24/06 - 20060188009 - Frame synchronization using soft decisions in a universal mobile telephone system receiver A Universal Mobile Telephone System (UMTS) receiver performs frame synchronization in accordance with a soft decision technique. Illustratively, the UMTS receiver first forms a matrix of correlation peak values (350) from at least one received frame, each row of the matrix representing a possible SSCH code and each column of ... 07/20/06 - 20060159161 - Positioning signal reception device and control method of positioning signal reception device A positioning signal reception device receives a positioning signal transmitted from a position information satellite, and includes: a signal reception portion that obtains a reception signal by receiving the positioning signal; an A/D conversion portion that generates a digital signal by converting the reception signal into a digital form; a ... 06/22/06 - 20060133460 - Method and device for fine synchronization of a digital telecommunication receiver A method for the synchronization of a digital telecommunication receiver comprises the steps of:—storing a plurality of consecutive samples E−1, B, M, 1, L+1 of an incoming spread spectrum signal in a delay line 56;—determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a ... 06/08/06 - 20060120440 - Method of and system for delay estimation with minimized finger allocation A signal-path delay-estimation method includes correlating a computed coarse delay profile of at least one detected signal path cluster with a waveform to yield a strongest correlated peak for each of the at least one detected signal path cluster. The method also includes, for each of the at least one ... 05/18/06 - 20060104337 - Circuit and method for adjusting timing alignment using programmable codes A method is provided for adjusting timing alignment in which a receiver generates a plurality of imbalanced correction codes (1310), and square waves both having the same frequency. The receiver mixes the imbalanced correction codes with the square waves to create a mixed signal (1320), and integrates the mixed signal ... 05/04/06 - 20060093021 - Code acquisition device and method using two-step search process in ds-cdma uwb modem There is provided a code acquisition device and method using a two-step search process in a DS-CDMA UWB modem. The device includes: an I/Q channel symbol generating unit for, generating a plurality (i) of nth I/Q channel symbols in a first search process and generating a plurality of nth I/Q ... 04/27/06 - 20060088083 - Phase cycling method in ssfp pulse sequence and magnetic resonance imaging apparatus In order to positively decrease the band artifact on the middle of image when the field ununiformity is relatively fair and Nex is small, the present invention provides a phase cycling method for use in SSFP pulse sequence of a gradient echo system for rolling back the phase shift of ... 01/26/06 - 20060018369 - Impulse-based communication system To provide a synchronization acquisition method, for impulse-based communication, that can easily accomplish synchronization acquisition even in a multipath environment, and that eliminates the need to repeat synchronization acquisition even when transmit information changes, the synchronization acquisition method being implemented using: a code synchronizing correlator (21) which synchronizes received information ... 01/26/06 - 20060018368 - Channel estimation system for a wideband code division multiple access (wcdma) communication system A channel estimation system is disclosed. The channel estimation system comprises a first memory element having a write function and a plurality of read functions, a pilot signal extraction element adapted to receive a first output of the first memory element, a programmable averaging element adapted to receive the output ... 11/17/05 - 20050254558 - Methods and structures for rapid code acquisition in spread spectrum communications Methods and structure for improved speed in pseudo-noise code acquisition. A receiver may include features to evaluate multiple potential pseudo-noise (PN) digital code sequences in parallel to more rapidly acquire the PN code utilized by a corresponding transmitter. Multiple PN code generators may operate substantially in parallel each pre-loaded to ... 11/10/05 - 20050249270 - Symbol synchronizing device A symbol synchronization device that enables effective symbol synchronization establishment and synchronization holding for an arbitrary spread code sequence. The device includes (i) a primary demodulation section for receiving a spread modulation signal where chips for symbol synchronization are added to a symbol data after spread modulation, and demodulating the ... 09/29/05 - 20050213644 - Spread communication system and mobile station thereof A search circuit in a CDMA system which has a plurality of base stations respectively employing different carrier frequencies, the search circuit selects one carrier frequency among the different carrier frequencies to perform a cell search of the one carrier frequency. The search circuit includes a first search unit searching ... 09/29/05 - 20050213643 - Spread communication system and mobile station thereof A system including base stations and a mobile station that performs a three-stage cell search process. Each base station includes a transmission unit using at least one carrier frequency for transmitting a perch channel signal, in which the at least one carrier frequency is uniquely distinguishable from carrier frequencies used ... 09/15/05 - 20050201449 - Code synchronization in cdma satellite wireless communications system using uplink channel detection An uplink signal transmitted by a terminal is received by a satellite wireless communications system. The uplink signal includes a known information element, e.g., a reverse access channel (R-ACH) preamble, spread according to a spreading code specific to a component of a satellite wireless communications system, e.g., a pseudonoise (PN) ... 08/11/05 - 20050175075 - Satellite positioning receiver using two signal carriers The invention relates to a satellite position pinpointing receiver intended to carry out combined processing of a first received radio signal and a second received radio signal which differ in frequency. The receiver comprises: a first correlator circuit and a second correlator circuit receiving the first and second received signals ... ### FreshPatents.com Support |