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Pulse Or Digital Communications > Spread Spectrum > Direct Sequence > Receiver

Receiver

Receiver 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.

11/08/07 - 20070258510 - Estimation of a signal-to-interference plus noise ratio at the output of an ofdm cdma receiver
This invention relates to a method of estimating the SINR ratio of an OFDM-CDMA type transmission using spread codes (ck), in which this ratio is estimated independently of the value of these codes. ...

10/18/07 - 20070242731 - Pilot aided adaptive minimum mean square interference cancellation and detection
A modified adaptive minimum mean square error (MMSE) receiver detects a spread spectrum signal, minimizing interference among multiple users. The receiver receives multiple pilot bits and corresponding data bits. A channel is estimated using at least one of the received pilot bits and, simultaneously, the data bits are detected based ...

09/27/07 - 20070223566 - Fast acquisition of a pilot signal in a wireless communication device
In a remote unit of a wireless communication system, the speed of acquisition, or reacquisition, of a pilot signal by a search engine is increased. PN space is divided into segments and a coarse search of each segment is performed using a set of “fast” search parameters. A set of ...

09/13/07 - 20070211790 - Fast frequency hopping with a code division multiplexed pilot in an ofdma system
Techniques are provided to support fast frequency hopping with a code division multiplexed (CDM) pilot in a multi-carrier communication system (e.g., an OFDMA system). Each transmitter (e.g., each terminal) in the system transmits a wideband pilot on all subbands to allow a receiver (e.g., a base station) to estimate the ...

09/06/07 - 20070206663 - Method and apparatus for code space search in a receiver
Apparatus and methods of implementing code space search of received signals are described herein. A code space search is implemented as a searcher that perform a subtask that is dynamically reconfigurable at each boundary of an initial integration time. Each particular subtask sets forth a programmable configuration of coherent integration ...

08/30/07 - 20070201537 - Method and device for demodulating galileo alternate binary offset carrier (alt-boc) signals
A method for demodulating alternate binary offset carrier signals includes at least two subcarriers, each having an in-phase and a quadrature component modulated by pseudo-random codes. The quadrature components are modulated by dataless pilot signals. The in-phase components are modulated by data signals. The method includes converting the alternate binary ...

08/23/07 - 20070195863 - (updated) preamble for fdma
A wireless device is provided that distinguishes between multiple piconets. The wireless device includes a preamble component and a correlator component. The preamble component provides a preamble for a wireless fixed frequency interleaving transmission, and the correlator component distinguishes a wireless transmission based on the preamble. A circuit is provided ...

08/23/07 - 20070195862 - Spread-spectrum receiver with fast m-sequence transform
A receiving system dynamically searches a communications band for transmissions of messages having the same nominal communications parameters, including the use of the same spreading code, but having potentially different specific frequencies and code-phases. The receiver samples the communications band at each code-phase of the spreading code over a span ...

07/19/07 - 20070165701 - Receiver capable of enhancing receiving efficiency in a code division multiple access communication system
A receiver capable of enhancing receiving efficiency in a code division multiple access communication system includes a signal reception end for receiving signals, a data output unit for outputting a plurality of data streams corresponding to a plurality of codes according to signals received by the signal reception end, a ...

07/19/07 - 20070165700 - Variable spreading factor-orthogonal frequency and code division et al.
A variable spreading factor-orthogonal frequency and code division multiplexing (VSF-OFCDM) system and receiver for use therein has a sequence extension remover for removing a predetermined number of chips from the received signal to form a modified signal, and a first converter for converting the modified signal from a serial sequence ...

07/05/07 - 20070153878 - Spur suppression for a receiver in a wireless communication system
Techniques for suppressing spurs in a receiver are described. A processor (e.g., within a wireless device) receives digital samples for a desired signal having a spur located within the bandwidth of the desired signal. A spur is an undesired signal that may be generated internally at the receiver or may ...

06/14/07 - 20070133661 - Dmb receiver capable of reducing time required for changing channel
Disclosed is a DMB (digital multimedia broadcasting) receiver configured such that PN (pseudo noise) code processing is performed prior to performing bit deinterleaving and Walsh code processing is performed after performing bit deinterleaving. ...

05/31/07 - 20070121707 - Spread spectrum signal receiver
A proposed spread spectrum signal receiver includes a radio front-end unit and a processing unit. The radio front-end unit, in turn, has an antenna, a digitizing circuit and a primary buffer unit. The antenna is adapted to receive radio signals (SHF) from a plurality of signal sources, and the digitizing ...

05/24/07 - 20070116098 - Processing a sequence of samples of a signal
For a method for processing a sequence of samples of a signal, it is assumed that the signal comprises a carrier that is modulated by a code composed of a sequence of chips. The method comprises wiping-off an influence by the carrier on the sequence of samples and downsampling the ...

05/17/07 - 20070110130 - Interpolation of channel search results
In general, the invention facilitates searching for energy peaks in spread spectrum wireless communication systems with greater precision. More particularly, various embodiments of the invention may involve reporting not only an energy peak and its associated offset, but also the energy levels corresponding to one or more offsets occurring before ...

05/10/07 - 20070104252 - Method and apparatus for estimating frequency offset in a wireless mobile communication system
A method of estimating frequency offset in a code division multiple access (CDMA) wireless communication system is disclosed. More specifically, the method includes receiving a training sequence, wherein the training sequence is represented by a plurality of periodically repeated training symbols, acquiring each of a plurality of phase difference values ...

05/10/07 - 20070104251 - Universal derotator for umts modes
The invention relates to a mobile communication apparatus (200) comprising a receiver (203), a derotator (206), a demodulator (208) and a processor (212). The receiver (203) is connected to the derotator (206), the derotator (206) to the demodulator (208), and the controller (212) to the receiver (203), derotator (206) and ...

04/19/07 - 20070086511 - Configurable baseband in a gps receiver
Clock compensation for GPS receivers. A receiver in accordance with the present invention comprises a Radio Frequency (RF) portion, and a baseband portion, coupled to the RF portion, wherein the baseband portion comprises a crystal, an oscillator, coupled to the crystal, wherein the oscillator generates a clock signal based on ...

04/19/07 - 20070086510 - Parallel architecture digital filter and spread spectrum signal receiver using such a filter
This invention relates to parallel architecture digital filter and signal receiver with spectrum spreading using such a filter, the filter may have p shift registers (Rp, Ri) with means for calculating a weighted sum of stored samples in the registers, p weighted sums (Skp, Ski) may be obtained and recombined ...

03/29/07 - 20070071071 - Methods and apparatus to perform frequency-domain equalization for channels with large delay-spreads
Methods and apparatus to perform frequency-domain equalization in high-speed downlink packet access (HSDPA) receivers for wireless channels with large delay-spreads are disclosed. An example method comprises computing a first frequency-domain equalizer (FDE) coefficient for a first set of multipaths, computing a second FDE coefficient for a second set of multipaths, ...

03/29/07 - 20070071070 - Receiver techniques for wireless communication
A receiver device for use in a wireless communication system (20) includes a rake receiver (32) and an equalizer receiver (34). A controller (36) selects one of the rake receiver (32) or the equalizer receiver (34) for processing a received signal. In some situations, the rake receiver (32) will provide ...

03/22/07 - 20070064775 - Wideband multiple access telecommunication method and apparatus
A method and system for retrieving a desired user data symbol sequence from a received signal are disclosed. In one embodiment, the method includes i) receiving a channel modified version of a transmitted signal comprising a plurality of user data symbol sequences, each being encoded with a user specific known ...

03/22/07 - 20070064774 - System, station, device and method for obtaining quantities
In an interrogation system (100) with a station (101) and a passive device (102), the station (101) interrogates the passive device (102) for a quantity (103) by transmitting an electromagnetic pulse (105). The passive device (102) has a cavity (109) that influences an ultrawideband reflection of the electromagnetic pulse (105) ...

03/22/07 - 20070064773 - Multi-carrier spread spectrum using non-linear modification of sub-carrier bands
A multicarrier spread spectrum (MC-SS) technique is disclosed which includes non-linearly modifying the sub-carriers in the receiver. A method (600) and receiver (200, 300) for processing an MC-SS signal, a transceiver for MC-SS communications (700), and an MC-SS radar (800) are describe. ...

03/08/07 - 20070053417 - Methods and apparatus to perform fractional-spaced channel estimation for frequency-domain equalizers
Methods and apparatus to perform fractional-spaced channel estimation for frequency-domain equalizers in high-speed downlink packet access (HSDPA) receivers are disclosed. An example method comprises computing a first fractionally-spaced time-domain channel estimate from an oversampled CDMA signal, and computing a first chip-interval frequency-domain equalizer (FDE) coefficient from the first fractionally-spaced channel ...

03/08/07 - 20070053416 - Methods and apparatus to perform closed-loop transmit diversity with frequency-domain equalizers
Methods and apparatus to perform closed-loop transmit diversity with frequency-domain equalizers in high-speed downlink packet access (HSDPA) receivers are disclosed. An example method comprises receiving a first signal representative of a first code division multiple access (CDMA) signal received from a first transmit antenna and a second signal representative of ...

02/22/07 - 20070041431 - Positioning a multipath search window
Multipath components of a signal transmitted through a time-varying digital radio channel are received with individual delays (τ) within a range (τ1 . . . τM) of possible delay values. The individual delays are estimated and a delay profile (g(τi)) calculated repetitively. The method comprises searching repetitively for new multipath ...

02/22/07 - 20070041430 - Reception device
If a spreading factor is small, the number of multiple paths is large, and an interference signal power is larger than a desired signal power, a conventional RAKE combining receiver presents insufficient suppression of the interference signal by means of despreading, resulting in largely degraded reception performances. Upon a receiver ...

01/04/07 - 20070002936 - Apparatus and method for efficiently distributing energy over a packet data channel in a mobile communication system for high rate packet transmission
An apparatus and method for efficiently distributing energy to a packet data channel. A turbo encoder generates a sequence of systematic symbols and a sequence of parity symbols by encoding an information bit stream. An interleaver interleaves the systematic symbol sequence and the parity symbol sequence, separately and serially concatenates ...

01/04/07 - 20070002935 - Method and apparatus for reducing the processing rate of a chip-level equalization receiver
A method and apparatus for reducing the processing rate when performing chip-level equalization (CLE) in a code division multiple access (CDMA) receiver which includes an equalizer filter. Signals received by at least one antenna of the receiver are sampled at M times the chip rate. Each sample stream is split ...

12/28/06 - 20060291541 - Reception device with data recovery mechanism, adapted to transmission system using a direct spread spectrum sequence
A BPSK type reception device that includes a decoder for decoding a digital input signal, first and second comparators for delivering a decoded data signal and a data capture clock signal also includes a clock generator for generating a replacement clock signal, first and second latches controlled by the replacement ...

12/28/06 - 20060291540 - Apparatus for processing digital if signals capable of detecting jamming signals
The present invention relates to an apparatus for processing digital signals capable of detecting jamming signals and achieving a technique using a circuit which detects whether an interference signal of a band of the received frequency exists or not. The apparatus operates from a CDMA-2000 base station device using the ...

12/21/06 - 20060285580 - Combined detection of transmission parameters and spreading factor in cdma communication system
A solution for determining in a radio receiver a data sequence indicating transmission parameters and a spreading factor applied to a frame before receiving the whole frame in the radio receiver. According to the provided solution, the transmission parameters and the spreading factor are determined from received data of a ...

12/14/06 - 20060280231 - Spread spectrum applications of universal frequency translation
Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion and de-spreading, and Early/Late receivers utilizing unified down-conversion and de-spreading, and combinations and applications of same. Additionally, applications ...

12/07/06 - 20060274819 - Truncation and level adjustment of rake output symbols
A method of receiving radio signals in a receiver for a digital wireless communications system comprises the steps of level adjusting a received radio signal by an automatic gain control (12); and despreading the signal in a RAKE unit (14) having a number of fingers. The despread data symbols are ...

11/09/06 - 20060251152 - Method and apparatus for estimating signal-to-noise ratio based on dedicated physical channel pilot symbols
The present invention is related to a method and apparatus for estimating signal-to-noise ratio (SNR) based on dedicated physical channel (DPCH) pilot symbols in a wireless communication system. A receiver receives a DPCH transmission and a despreader despreads the received DPCH transmission. A selector selects pilot symbols in the despread ...

11/02/06 - 20060245475 - Method and apparatus for computing sir of time varying signals in a wireless communication system
A method and apparatus for correcting symbols of a common pilot channel (CPICH) to generate an accurate signal-to-interference ratio (SIR) estimate in a wireless communication system are disclosed. In one embodiment, a non-stationary mean of a group of the CPICH symbols is estimated, the CPICH symbols are delayed, and the ...

10/19/06 - 20060233223 - Communication system with receivers employing generalized two-stage data estimation
A wireless transmit/receive unit (WTRU) is configure to receive and sample wireless signals in a shared spectrum where the wireless signal comprise encoded symbols. The WTRU has a channel estimation device configured to process received signal samples to produce an estimate of a channel response of the received signals corresponding ...

10/19/06 - 20060233222 - Sir prediction method and apparatus
The present invention provides a method and apparatus for generating SIR estimates early in a time interval that include the benefits of interference suppression without requiring the computation of specific interference suppression elements. In particular, the present invention generates an SIR estimate for a RAKE receiver during a current time ...

10/19/06 - 20060233221 - Multi-antenna solution for mobile handset
A mobile terminal with multi-antenna (200) based on CDMA, comprises a plurality of groups of radio frequency signal processing modules (202), for transforming received multi-channel radio frequency signals based on CDMA to multi-channel baseband signals; a multi-antenna module (206), for combining said multi-channel baseband signals output from the plurality of ...

09/21/06 - 20060209929 - Decoding device, adapted for a transmission system using direct sequence spread spectrum
This device comprises several finite response filters (FLT1 to FLT4) each of which receives the digital input signal (E), a clock circuit (CLK_GEN) outputting clock signals (CLK1 to CLK4) to the filters with a frequency equal to the frequency at which symbol elements are produced and uniformly distributed phase shifts, ...

09/14/06 - 20060203893 - Components and methods for processing in wireless communication data in presence of format uncertainty
Components and method are provided to efficiently process wireless communications data where prior knowledge of a specific format of the communication data is not available. A wireless transmit receive unit (WTRU) is configured for use in a wireless communication system where communication data for selected channels is transmitted in system ...

09/07/06 - 20060198427 - System and method for fast code phase and carrier frequency acquisition in gps receiver
A GPS receiver acquires carrier frequency and Gold code phase using short segments of a received GPS signal. In one embodiment, a 1-ms segment of the GPS signal is transformed to the frequency domain. This is multiplied by a frequency representation of the Gold code. The resulting product is converted ...

08/10/06 - 20060176938 - Method and apparatus for transmitting and receiving high speed data using code division multiple access channels
The present invention describes a spread spectrum communication system wherein the frequency of carriers and the code channels of the carriers or both for transmission to a given remote station user vary in time. This provides for a direct sequence spectrum communications system which changes frequency or code channel according ...

08/10/06 - 20060176937 - Method for rake finger placement with reliable path detection
In the method for rake finger placement in a receiver, a delay profile of a multipath transmission channel is determined, wherein the signal strength is distributed over a plurality of delay times in at least one path component in the delay profile. At least a part of the at least ...

07/27/06 - 20060165157 - System and method for pn correlation and symbol synchronization
A method is disclosed for PN correlation and symbol synchronization of a spread spectrum signal at a receiver when a symbol boundary of the spread spectrum signal is not on a PN epoch or is otherwise unknown. The method includes the operation of modulating the spread spectrum signal with a ...

06/29/06 - 20060140254 - Multi-path detection method for cdma receivers
The present invention provides a method for a multi-path detection analysis and selectivity of CDMA signals using spread spectrum receivers using a correlation technique. The invention is based on determining by the spread spectrum receiver whether a distortion of a received radio frequency signal, caused by a multi-path component of ...

06/15/06 - 20060126704 - System for estimating data using iterative fast fourier transform error correction
A system for estimating data from a received plurality of data signals in a code division multiple access communication system. The data signals are transmitted in a shared spectrum at substantially the same time. A receiver receives a combined signal of the transmitted data signals and a sampling device samples ...

06/15/06 - 20060126703 - Method of receiving spread spectrum signal, and receiver
A receiver for receiving a spread spectrum signal, including mechanisms for receiving a combination signal including a user signal spread with the user's spreading code, mechanisms for correlating the received combination signal for observing correlation between the user's spreading code and spreading codes used in the combination signal, mechanisms for ...

06/01/06 - 20060114972 - Multicode receiver
A code division multiple access (CDMA) receiver detects, de-scrambles, and de-spreads multiple channels that utilize different binary codes. The processing that is common to all channels can be performed once thus saving gate count and power consumption. ...

06/01/06 - 20060114971 - Receiver, apparatus for generating despread code, and method of generating despread code
A receiver receives and demodulates a transmission signal that is modulated in Phase Shift Keying modulation and Direct Sequence Spread Spectrum using a spread code. The receiver includes a signal receiving unit that receives the transmission signal and outputs a received signal; a filter unit through which the received signal ...

05/25/06 - 20060109891 - Reduced parallel and pipelined high-order mimo lmmse receiver architecture
Disclosed is a LMMSE receiver that restores orthogonality of spreading codes in the downlink channel for a spread spectrum signal received over N receive antennas. The FFT-based chip equalizer tap solver reduces the direct matrix inverse of the prior art to the inverse of some submatrices of size N×N with ...

05/11/06 - 20060098718 - Method and apparatus for maximizing standby time in remote stations configured to receive broadcast databurst messages
A wireless telecommunications system includes a base station, a plurality of remote stations, a first channel for general page messages containing paging information and broadcast databurst message references, and an auxiliary channel for broadcast databurst notification indicators for the purpose of increasing standby time in remote stations configured to receive ...

05/11/06 - 20060098717 - Method and apparatus for reducing the processing rate of a chip-level equalization receiver
A method and apparatus for reducing the processing rate when performing chip-level equalization (CLE) in a code division multiple access (CDMA) receiver which includes an equalizer filter. Signals received by at least one antenna of the receiver are sampled at M times the chip rate. Each sample stream is split ...

04/06/06 - 20060072650 - Method and system for managing, controlling, and combining signals in a frequency selective multipath fading channel
Aspects of a method and system for managing, controlling and combining signals in a frequency selective multipath fading channel are presented. Aspects of the system may comprise a searcher that detects a maximum signal energy level among at least one of a plurality of individual distinct path signals in a ...

03/30/06 - 20060067383 - Parameter estimate initialization using interpolation
A receiver is described herein that is capable of receiving and processing a radio signal and further capable of using interpolation to initialize receiver parameters when there is a change in at least one delay associated with the received radio signal or when there is at least one new correlator ...

03/23/06 - 20060062283 - Iterative and turbo-based method and apparatus for equalization of spread-spectrum downlink channels
A system, terminal, receiver and method are provided for receiving and processing a signal received from a spread-spectrum downlink channel. The method includes receiving the signal from the downlink channel, and generating an estimate of a transmitted chip sequence in accordance with an iterative process. In this regard, the iterative ...

03/16/06 - 20060056494 - Channel estimation for time division duplex communication systems
A single transmitter transmits K communication bursts in a shared spectrum in a time slot of a time division duplex communication system. Each burst has an associated midamble sequence, a receiver knowing the midamble sequences of the K bursts. The receiver receives a vector corresponding to the transmitted midamble sequences ...

02/16/06 - 20060034351 - Monitoring stability of an on-frequency repeater
In a system for monitoring stability of an on-frequency repeater, a wide-band signature (WBS) signal associated with the repeater is generated, and inserted into an output RF signal transmitted by the repeater. Signal components corresponding to the WBS signal in an input RF signal received by the repeater are detected ...

02/16/06 - 20060034350 - Method and system for applying viterbi type psk demodulation for optimum correlation of gps signals
A method and system of improving sensitivity in the demodulation of a received signal over an arbitrary measurement time epoch, the method comprising the steps of: correlating the received signal in a coherent fashion (80); and utilizing a Viterbi phase state keying trellis demodulation with a variable resolution of phase ...

12/29/05 - 20050286612 - De-interleaver, mobile communication terminal, and de-interleaving method
A de-interleaver has a TTI frame buffer storing a TTI frame before de-interleaving, a P bit information table storing P bit information containing the size and added position of P bits to be added to the TTI frame before de-interleaving, and a permutation rule table storing permutation rules of de-interleaving. ...

12/22/05 - 20050281323 - Method of receiver processing of cdma signals in a cdma system
The method of receiver processing of CDMA signals in a CDMA system includes first converting a received signal in the time domain to a received signal in the frequency domain, and equalizing the received signal in the frequency domain using a set of frequency domain weights. The equalized received signal ...

12/01/05 - 20050265431 - Performing an acquisition in a receiver
A method for performing an acquisition to a code-modulated spread spectrum signal comprises receiving the transmitted signal, sampling the received signal to form samples, forming at least one reference code corresponding to a code used in the modulation and forming a non-coherent search matrix on the basis of said samples. ...

11/10/05 - 20050249268 - (updated) preamble for fdma
A wireless device (10, 12) is provided that distinguishes between multiple piconets. The wireless device (10, 12) includes a preamble component (160, 162, 164, 166) and a correlator (150) component. The preamble component (160, 162, 164, 166) provides a preamble (120) for a wireless fixed frequency interleaving transmission, and the ...

11/03/05 - 20050243898 - Receiver for wireless telecommunication stations and method
The present invention is directed to an improved telecommunication receiver for receiving wireless multi-path communication signals. A novel RAKE receiver and a time diverse integration system for the calculation of the relative power of received signal samples are provided. Preferably, the receiver is embodied in a UE or base station ...

09/29/05 - 20050213640 - Communication system with receivers employing generalized two-stage data estimation
A wireless communication system comprises first and second communication stations which send and receive symbols in signals in a shared spectrum. The symbols are recovered from the received signals. Codes of the signals are processed using a block Fourier transform (FT), producing a code block diagonal matrix. A channel response ...

09/22/05 - 20050207477 - Technique for adaptive multiuser equalization in code division multiple access systems
A radio communication method and system for transmitting multiple-user digital data information in a Code Division Multiple Access (CDMA) format over multipath and mutual-interfering channels to a receiving terminal with diversity antennas and equalization signal processing. At the receiving terminal, diversity antenna signals are grouped into time blocks and replicas ...

09/22/05 - 20050207476 - Method, arrangement and communication receiver for snir estimation
where E represents mean value and r(t) represents the level of the received signal; and correcting (512B, 512C) the estimation {circumflex over (Z)} to produce a corrected estimation Z based on the relation Z=α({circumflex over (Z)})×{circumflex over (Z)}, where α({circumflex over (Z)}) represents a correction factor. The estimation may be ...

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08/25/05 - 20050185701 - Adaptive diversity combining for wide band code division multiple access (w-cdma) based on iterative channel estimation
iteratively estimating channel interference after removing Iknown components of the multi-path interference from the pilot symbols, using the convergence/divergence of the iteration as an indicator of the channel condition, and selecting the combining technique (MRC or EGC) automatically depending on the channel condition. The instant invention also provides a system ...

08/25/05 - 20050185700 - Method and apparatus for receiving a signal
The present invention provides a method for a flexible multimode operation of spread spectrum receivers, e.g., global navigation satellite system (GNSS) receivers, using a shared circuitry hardware configuration of the receiver for processing of different types of code division multiple access (CDMA) signals. According to said method the receiver utilizes ...

08/04/05 - 20050169353 - Post despreading interpolation in cdma systems
Methods and apparatus for processing a spread spectrum baseband signal, such as a CDMA baseband signal, are provided. The method includes despreading samples of the baseband signals with two or more instances of a despreading code, the instances of the spreading code successively offset relative to the signal samples, to ...

08/04/05 - 20050169352 - Control circuit
A digital control circuit enables/disables the feedback of serial transmissions of an UART receive signal when the G-LINK output port is short circuited in a particular operational mode. In a conventional operational mode, the digital control circuit monitors the state of the UART's Tx output and during an UART transmission, ...

07/28/05 - 20050163197 - Spread-spectrum receivers with extended dynamic range
A received analog spread-spectrum signal is selectively attenuated prior to digitization, where the amount of attenuation is based on the amplitude of the digitized signal before the digitized signal is filtered to compensate for interference that may exist in the received signal. By selectively attenuating the signal only when the ...

07/14/05 - 20050152436 - Method of and apparatus for computation of unbiased power delay profile
A method of determining a noise-corrected power delay profile includes determining a power delay profile and calculating a noise-corrected power delay profile. The step of calculating the noise-corrected power delay profile includes using a biased noise-floor power estimate, the power delay profile, and a noise-scaling factor. ...

07/07/05 - 20050147155 - System and method for the directional reception and despreading of direct-sequence spread-spectrum signals
A system (100) and method for the reception and despreading of a code-division multiple access (CDMA) global positioning system (GPS) signal (200), or other direct-sequence spread-spectrum (DSSS) signals, is provided. An antenna array (102) receives the DSSS signal (200) over a plurality of elements (116). A preprocessor (104) down converts ...

06/02/05 - 20050117630 - Receiver
Disclosed is a receiver for achieving optimum power consumption and optimum reception performance according to use, purpose, and required performance. A control circuit calculates an evaluation value H relating to a detection method and a reception state of a received signal. When a delay detection is selected depending on the ...



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