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8144823 Signal processing device and signal processing method  
The present invention discloses a signal processing device and a signal processing method. The signal processing device includes a plurality of receiving devices, a storage module, a weighting...
8144798 Long training sequence for MIMO WLAN systems  
A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a plurality of preambles for a plurality of transmit antennas. Each of the plurality of...
8144824 Trend influenced time tracking  
A method for determining a communication channel location is disclosed. A first subset of a plurality of channel impulse responses is averaged over a first time period to produce a first filtered...
8144793 Cognitive multi-user OFDMA  
A computing device operating according to a frequency division multiplexed protocol in which communication occurs over a signal formed from a plurality of sub-channels selected from anywhere in a...
8140122 Apparatus and method for changing communication mode in multi-antenna system considering channel environment  
An apparatus and a method for determining a multi-antenna transmission mode at a base station in a multi-antenna system are provided. The method for determining the multi-antenna transmission mode...
8135054 Processing of interference on a radiofrequency signal by power inversion  
The invention relates to a radiofrequency receiver, notably for satellite positioning applications, needing to operate in an environment where interference is dense, notably when it involves pulses...
8130878 Apparatus and method for estimating carrier-to-interference-and-noise ratio in an orthogonal frequency division multiplexing system  
An apparatus and method for estimating a carrier-to-interference-and-noise ratio (CINR) of a received signal in an orthogonal frequency division multiplexing (OFDM) system are provided. A band-pass...
8130820 Method and apparatus for interference cancellation in a wireless communications system  
Successive interference cancellation is performed with improved computational efficiency while offering performance approaching that of full CRC-based successive interference cancellation. In a...
8126098 Multi-rake receiver  
A wireless receiver includes M antennas that each receive a wireless signal. N rake receiver modules receive the wireless signals from the M antennas and combine multipath components of the...
8126031 Time-tracking management of demodulation elements in a receive diversity enabled rake receiver  
A rake receiver comprises a plurality of receive antennas and a processing system. Each receive antenna has a plurality of demodulation elements. The processing system is configured to assign a...
8125886 System, apparatus, and method for spatial multiplexing with symbol spreading  
The present invention provides a system (400), device (200, 300), and method (200) for a spatial multiplexing (SMX) transmission scheme combined with symbol spreading and rotation using a...
8126085 Method and apparatus to estimate channel tap  
Briefly, a method an apparatus and a wireless communication device are provided. The wireless communication device includes a receiver to receive complex sequences of symbols. The receiver includes...
8125381 Satellite-based positioning system improvement  
A method, device and system for determining a receiver location using weak signal satellite transmissions. The invention involves a sequence of exchanges between an aiding source and a receiver...
8121176 Iterative interference canceler for wireless multiple-access systems with multiple receive antennas  
This invention teaches to the details of an interference canceling receiver for canceling intra-cell and inter-cell interference in coded, multiple-access, spread spectrum transmissions that...
8121228 Detecting a data frame  
A detector (109) and corresponding method is configured for detecting presence of a data frame. The detector includes a first correlator (123) that is configured to provide a first plurality of...
8121177 Method and apparatus for interference suppression with efficient matrix inversion in a DS-CDMA system  
A receiver in a CDMA system comprises a front end processor that generates a combined signal per source. A symbol estimator processes the combined signal to produce symbol estimates. An S-Matrix...
8116353 Spread spectrum modulator and demodulator  
A spread spectrum modulator converts input sequences composed of digital symbols into n≧2 spread-spectrum sequences. The spread spectrum modulator can generate spreading code and can combine the s...
8116794 Channel impulse response extraction for mobile terminals  
Finding a channel impulse response estimation window in a current cell for at least one mobile terminal in a neighboring cell is disclosed. This can serve to mitigate interference caused by mobile...
8116355 Method of selecting echoes of a signal for assignment to fingers of a Rake receiver and corresponding Rake receiver  
A method is provided for processing a signal emanating from a multi-path transmission medium. A number L of echoes of the signal received are detected, with L being greater than the number N of...
8111789 Method and system for channel estimation in a single channel MIMO system with multiple RF chains for WCDMA/HSDPA  
Aspects of a method and system for channel estimation in a MIMO communication system with multiple RF chains for WCDMA/HSDPA may comprise receiving a plurality of communication signals from a...
8111790 Mitigating interference in a coded communication system  
A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can...
8111669 Parallel interference cancellation and minimum cost channel estimation  
Methods and systems in a wireless receiver for enabling the reception of input signals at varied power levels in the presence of co-channel interference utilizing combinations of space-time...
8107560 Method and apparatus for interference cancellation in communication signal processing  
A method and apparatus blindly detects a received signal's modulation type characterizing an impairment component of the received signal for each postulated modulation type by determining spatial...
8107512 Method and apparatus for robust automatic frequency control in CDMA systems with constant pilot signals  
There is provided a method for generating an error signal for an automatic frequency control (AFC) loop in a Code Division Multiple Access (CDMA) system. Sign information relating to phase...
8108749 Diversity combining iterative decoder  
An iterative decoder circuit includes an N number of sub-decoders, N−1 of the sub-decoders each being responsive to a baseband signal from one of M number of signal processing circuits. Each of t...
8107549 Multi-stage receiver for wireless communication  
Techniques for receiving a MIMO transmission are described. A receiver processes received data from multiple receive antennas in multiple stages. A first stage performs front-end...
8102899 Receiver and method of receiving a CDMA signal in presence of interferences with unknown spreading factors  
A receiver arranged to receive a plurality of spread spectrum signals including a first spread spectrum signal from which interference caused by one or more others of said plurality of signals is...
8102907 Space-frequency equalization for oversampled received signals  
Techniques for performing space-frequency equalization and spatial equalization in the frequency domain are described. Space-frequency equalization combines signal components across both space and...
8099123 Adaptation of transmit subchannel gains in a system with interference cancellation  
A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect...
8098714 Method for estimating, in a communication system, the level of interference plus noise affecting received signals representative of a set of received pilot symbols  
The present invention concerns a method for estimating, in a communication system, a level of interference plus noise affecting received signals representative of a set of received pilot symbols,...
8098706 Signal generator for a DSSS or CDMA signal  
The invention relates to a signal generator for a DSSS or CDMA signal, comprising several spread sequence memories and a digital signal processor which pre-calculates the spread sequence in an...
8098779 Interference detection and mitigation  
Techniques for detecting and mitigating interference are described. A device (e.g., a cellular phone) senses interference levels and digitally reconstructs the expected interference in the received...
8090011 Measuring apparatus, measuring method, recording medium, and test apparatus  
Provided is a measuring apparatus which measures a quadrature modulator, including a supplying section supplying the quadrature modulator with a reference I signal having a predetermined frequency...
8090006 Systems and methods for serial cancellation  
A receiver in a CDMA system comprises a front end processor that generates a combined signal per source. A symbol estimator processes the combined signal to produce symbol estimates. An S-Matrix...
8086178 Beam-forming method for realizing interference suppression  
The present invention discloses a beam-forming method for realizing interference suppression, comprising steps of: a. performing channel estimation for an expected user signal and interference...
8086257 Dedicated control channel detection for enhanced dedicated channel  
In a method of detecting a signal, a control channel associated with a physical channel may be decoded to produce at least one decoding metric. A control channel signal on the control channel may...
8085832 Segment-wise channel equalization based data estimation  
Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received...
8081672 Method and system for channel estimation in a single channel (SC) single-input multiple-output (SIMO) system  
The method and system for channel estimation in a single channel (SC) single-input multiple-output (SIMO) system described herein may provide a fast and cost effective approach to concurrently...
8081922 Methods and apparatuses for processing satellite positioning system signals  
Methods and apparatus are provided for use in devices adapted to receive signals from at least one satellite positioning system (SPS). As part of at least one search for a transmission from a space...
8077757 Sampling method for a spread spectrum communication system  
Method for decoding a signal sent over a bandwidth-expanding communication system, where both channel estimation and signal detection are carried out on a set of samples generated by sampling the...
8077627 Receiving apparatus and method in broadband wireless access system  
Provided is an apparatus and method for enhancing a demodulation performance of a receiver in a Broadband Wireless Access (BWA) system. A receiving apparatus in a broadband wireless communication...
8077756 Signal transmitting method, transmitting apparatus, and receiving apparatus used for the signal transmitting method  
A disclosed signal transmitting method includes the steps of a) categorizing plural digital signals, obtained by performing A/D conversion on plural analog signals consecutively arranged in a time...
8077758 Signal separation techniques to provide robust spread spectrum signal decoding  
A spread spectrum communications system includes an antenna array for receiving different summations of desired and undesired signals, and receivers are coupled to the antenna array. Each receiver...
8073039 Reception apparatus using spread spectrum communication scheme  
In a reception apparatus, a matched filter that has conventionally been arranged in a searcher unit is mounted on an acquisition unit together with a large scale memory. The large scale memory once...
8068531 Method and apparatus for eliminating narrow band interference by means of windowing processing in spread spectrum system  
A device and method for eliminating narrow-band interference by windowing in a spread spectrum system are disclosed. The method comprises extracting N sampling points of data to perform frequency...
8068535 Robust iterative linear system solvers  
In receiving equipment such as a mobile terminal (1) for decoding received signals coded according to a CDMA method are decoded in an intermediate processor (9). In the decoding, coefficients or...
8064823 Apparatus, method and computer program product for determining transmit weights in relay networks  
Apparatus, methods and computer program products implement a channel-aware approach for controlling a relay network operative in a wireless communications system wherein weighting matrices are used...
8064496 Interference cancellation for wireless communication  
Interference in a wireless communication is minimized, or at least reduced, by scaling the symbols received from an interfering transmitter. Input samples from the interfering transmitter are...
8064838 System and method for reducing radio frequency interference from digital circuits  
An information handling system includes a digital circuit having a first terminal connected to a first voltage reference, and a second terminal connected to a second voltage reference. The digital...
8064556 Fractionally-spaced equalizers for spread spectrum wireless communication  
This disclosure describes equalization techniques for spread spectrum wireless communication. The techniques may involve estimating a channel impulse response, estimating channel variance, and...