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Class Information
Number: 714/796
Name: Error detection/correction and fault detection/recovery > Pulse or data error handling > Digital data error correction > Forward error correction by tree code (e.g., convolutional) > Branch metric calculation
Description: Subject matter where a tree of possible data sequences is constructed identifying the possible data sequences in terms of data states, and from which correlations are computed for selecting the paths which are to survive to the next stage of decoding received data.

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8707147 Viterbi decoder method and apparatus with RI detector in servo channel Apr. 22, 2014
8694877 Max-log-map equivalence log likelihood ratio generation soft viterbi architecture system and method Apr. 8, 2014
8683306 Systems and methods for data detection including dynamic scaling Mar. 25, 2014
8677202 Generating a moving average Mar. 18, 2014
8650468 Initializing decoding metrics Feb. 11, 2014
8644432 Viterbi decoder for decoding convolutionally encoded data stream Feb. 4, 2014
8645808 Calculation of soft decoding metrics Feb. 4, 2014
8644431 Parallel execution of trellis-based methods Feb. 4, 2014
8631309 Forward error correction with extended effective block size Jan. 14, 2014
8625723 Method and apparatus for performing demapping in wireless communication system Jan. 7, 2014
8621335 Optimized Viterbi decoder and GNSS receiver Dec. 31, 2013
8612837 BM/LLR computations for multi-dimensional TCM/BCM codes Dec. 17, 2013
8605832 Joint sequence estimation of symbol and phase with high tolerance of nonlinearity Dec. 10, 2013
8601357 Method for obtaining a set of path metrics and equalizer for a receiver for digital data Dec. 3, 2013
8601356 Method and circuit for BER estimation Dec. 3, 2013
8601355 System and method for determining parity bit soft information at a turbo decoder output Dec. 3, 2013
8589758 Method and system for cyclic redundancy check Nov. 19, 2013
8582696 Method and apparatus for data quantization and packing with variable bit width and period Nov. 12, 2013
8576958 Method for soft modulation in a wireless telecommunication network Nov. 5, 2013
8578255 Priming of metrics used by convolutional decoders Nov. 5, 2013
8566684 Decoding and optimized implementation of SECDED codes over GF(q) Oct. 22, 2013
8560930 Systems and methods for multi-level quasi-cyclic low density parity check codes Oct. 15, 2013
8555138 Symbol error detection method Oct. 8, 2013
8549386 Pre-decoded tail-biting convolutional code decoder and decoding method thereof Oct. 1, 2013
8543896 Iterative decoder Sep. 24, 2013
8543881 Apparatus and method for high throughput unified turbo decoding Sep. 24, 2013
8543872 Detecting and eliminating potential performance degradation caused by neighboring identical scrambling codes Sep. 24, 2013
8543895 List Viterbi decoding of tail biting convolutional codes Sep. 24, 2013
8537917 Apparatus and method for mapping symbol Sep. 17, 2013
8516353 Symbol vector-level combining receiver for incremental redundancy HARQ with MIMO Aug. 20, 2013
8509358 Viterbi equalization with detection of the nearest constellation points for stage reduction Aug. 13, 2013
8503584 Efficient implementation of M-algorithm based on QR decomposition for higher-order constellations Aug. 6, 2013
8504895 Using damping factors to overcome LDPC trapping sets Aug. 6, 2013
8498365 Detection and mitigation of temporary impairments in a communications channel Jul. 30, 2013
8498326 Method and apparatus for forward error correction Jul. 30, 2013
8489972 Decoding method and decoding device Jul. 16, 2013
8483328 System for soft symbol decoding MIMO log-map detection Jul. 9, 2013
RE44335 System and method for providing terrestrial digital broadcasting service using single frequency network Jul. 2, 2013
8479085 Memory system with error correction decoder architecture having reduced latency and increased throughput Jul. 2, 2013
8477884 Accelerated turbo transceiver and method for MIMO system Jul. 2, 2013
8473828 Minimal hardware implementation of non-parity and parity trellis Jun. 25, 2013
8473830 Viterbi decoder method and apparatus with RI detector in servo channel Jun. 25, 2013
8468430 Product code decoding method and device Jun. 18, 2013
8458578 Apparatus for generating soft decision values using an analog-to-digital converter and method thereof Jun. 4, 2013
8453038 Chien search using multiple basis representation May. 28, 2013
8448040 Decoding method and decoding apparatus May. 21, 2013
8442163 List-viterbi hard iterative decoder for multilevel codes May. 14, 2013
8443273 Data dependent NPML detection and systems thereof May. 14, 2013
8413021 Efficient soft value generation for coded bits in a turbo decoder Apr. 2, 2013
8413032 Read channel detector for noise cancellation Apr. 2, 2013

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