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Class Information
Number: 375/262
Name: Pulse or digital communications > Systems using alternating or pulsating current > Plural channels for transmission of a single pulse train > Quadrature amplitude modulation > Maximum likelihood decoder or viterbi decoder
Description: Subject matter for choosing an estimate code word for each possible received sequence of a demodulation output.

Patents under this class:

Patent Number Title Of Patent Date Issued
8625689 Time-domain link adaptation Jan. 7, 2014
8621335 Optimized Viterbi decoder and GNSS receiver Dec. 31, 2013
8619921 Channel estimation apparatus, channel estimation method and program Dec. 31, 2013
8619913 Method of selecting metrics and receiver using the same Dec. 31, 2013
8619910 Decision feedback equalization for MIMO systems with hybrid ARQ Dec. 31, 2013
8619884 Communication channel estimation Dec. 31, 2013
8615057 Method and device for multiple input-multiple output detection Dec. 24, 2013
8615051 System and method for effectively transferring electronic information Dec. 24, 2013
8611485 Method and a device for controlling frequency synchronization Dec. 17, 2013
8611480 Optimal decoding of transmit diversity code with varying channel characteristics Dec. 17, 2013
8611446 Communication system using initial likelihood information for performing maximum likelihood sequence estimation (MLSE) Dec. 17, 2013
8611444 Receiver and signal receiving method thereof Dec. 17, 2013
8611440 Systems and methods for generating sequences that are nearest to a set of sequences with minimum average cross-correlation Dec. 17, 2013
8605832 Joint sequence estimation of symbol and phase with high tolerance of nonlinearity Dec. 10, 2013
8601356 Method and circuit for BER estimation Dec. 3, 2013
8595590 Systems and methods for encoding and decoding of check-irregular non-systematic IRA codes Nov. 26, 2013
8594246 Multi-Viterbi receive channel decoder Nov. 26, 2013
8594217 Parallel implementation of maximum a posteriori probability decoder Nov. 26, 2013
8594207 Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system Nov. 26, 2013
8582696 Method and apparatus for data quantization and packing with variable bit width and period Nov. 12, 2013
8582677 Communication apparatus, communication method and computer program Nov. 12, 2013
8578236 Accumulating LDPC (low density parity check) decoder Nov. 5, 2013
8576962 Determining cross-polarization isolation using a modulated carrier Nov. 5, 2013
8576960 Method and apparatus for efficient AMLD matrix computations Nov. 5, 2013
8576959 Receiver with prefiltering for discrete fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) based systems Nov. 5, 2013
8576936 Method and apparatus for high speed data transmission modulation and demodulation Nov. 5, 2013
8571119 Software defined radio for modulation and demodulation of multiple communication standards Oct. 29, 2013
8570879 Obtaining parameters for minimizing an error event probability Oct. 29, 2013
8566687 Method and system for forward error correction decoding with parity check for use in low complexity highly-spectrally efficient communications Oct. 22, 2013
8565339 Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal Oct. 22, 2013
8565291 Communication apparatus, data communication method, and storage medium storing data communication program Oct. 22, 2013
8559497 Adaptation of delay line feedback equalizer Oct. 15, 2013
8555145 Systems and methods of encoding using a reduced codebook with adaptive resetting Oct. 8, 2013
8553811 Likelihood value calculation device, likelihood value calculation method, and radio system Oct. 8, 2013
8553799 Method and apparatus for obtaining precoding matrix indicator Oct. 8, 2013
8553798 Method and apparatus for generating pre-coding matrix codebook Oct. 8, 2013
8548103 Method and apparatus of adaptive transmission signal detection based on signal-to-noise ratio and Chi-squared distribution Oct. 1, 2013
8548081 Methods and apparatus for diversity combining of repeated signals in OFDMA systems Oct. 1, 2013
8542776 Apparatus and method for transmitting/receiving data in a multi-antenna system, and system using the same Sep. 24, 2013
8542760 Full-rate distributed space-time codes for cooperative communications Sep. 24, 2013
8537917 Apparatus and method for mapping symbol Sep. 17, 2013
8532226 EHF wireless communication receiver using beamforming with a scalable number of antenna paths Sep. 10, 2013
8532214 MIMO channel state information estimation with coupled iterative two-stage ranking Sep. 10, 2013
8532202 Near soft-output maximum likelihood detection for multiple-input multiple-output systems using reduced list detection Sep. 10, 2013
8532201 Methods and apparatus for identifying a preamble sequence and for estimating an integer carrier frequency offset Sep. 10, 2013
8526517 Blind SLM and PTS method with low decoding complexity of OFDM signals Sep. 3, 2013
8520761 Method and apparatus for generating pre-coding matrix codebook Aug. 27, 2013
8520754 Reception apparatus and method, program and reception system Aug. 27, 2013
8514993 Method for frequency offset estimation and automatic frequency control for filtered signal with destroyed phase information and signal transceiver Aug. 20, 2013
8514976 Method and apparatus for coding and interleaving for very high throughput wireless communications Aug. 20, 2013

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