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US20090287981 Construction of Parity-Check Matrices for Non-Binarys LDPC Codes  
A parity check matrix construction method for constructing a non-binary parity check matrix defining a non-binary LDPC code. In particular, a parity check matrix construction method for setting...
US20100174972 METHOD FOR GENERATING PARITY-CHECK MATRIX  
A method for generating a parity check matrix to decode a plurality of underdetermined nodes, includes the steps of: determining a plurality of specific nodes according to a predetermined parity...
US20070271496 3-Stripes Gilbert Ldpc Codes  
A method and apparatus are provided for a coding process of a communication signal. A 3-stripes parity-check matrix is generated from a parity-check matrix of a Gilbert low density parity-check...
US20110154168 EFFECTIVE HIGH-SPEED LDPC ENCODING METHOD AND APPARATUS USING THE SAME  
Disclosed is an effective high-speed encoding method using a parity-check matrix proposed in an IEEE 802.1x standard for high-speed low-density parity-check encoding. In the prior art, encoding...
US20100115386 Scalable Folded Decoder Architecture for Low Density Parity Check Codes  
A layered message updating method and system for the decoding of LDPC codes with high sub-matrix degree has a scalable foldable and flexible decoder architecture to support LDPC codes with...
US20090164864 INSPECTION MATRIX GENERATION METHOD, ENCODING METHOD, COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND ENCODER  
A regular qc matrix is generated in which cyclic permutation matrices with specific regularity are arranged in row and column directions. A mask matrix supporting multiple encoding rates is...
US20070198905 Transmitter for a communications network  
A transmitter for a communications network, the transmitter comprising: receiving means for receiving data; accessing means for accessing a parity check code; generating means for generating...
US20080126916 METHOD OF EXECUTING LDPC CODING USING PARITY CHECK MATRIX  
A low density parity check (LDPC) coding method, and more particularly, a method of executing LDPC coding using a parity check matrix is disclosed. The present invention comprises providing an...
US20100281349 Systems and Methods for Retransmission Return Channel Error Detection  
A method implemented in a digital subscriber line (DSL) system is described for minimizing a misdetection probability at a far-end coded message receiver during transmission of a coded message....
US20070033513 Radio communication system, transmitter and decoding apparatus employed in radio communication system  
Radio-communication-system includes transmitting-station and receiving-station. The transmitting-station includes first-encoding-unit configured to generate plural parity-information by using the...
US20080250305 Method for generating non-binary structured low density parity check code  
A method for generating a non-binary Low Density Parity Check (LDPC) code. The method includes generating non-binary identity matrixes so as to satisfy at least one condition, wherein the...
US20080256426 Low Density Parity Check Codes For Mimo Systems  
A low density parity check code is generated by defining first a framework combining symbol detection and low density parity check decoding. Probabilistic information describing...
US20080168324 Basic Matrix Based on Irregular Ldpc, Codec and Generation Method Thereof  
Basic matrix based on irregular LDPC codes, codec and generation method thereof. The codec includes an encoding/decoding operation module and a basic matrix storage module. In the stored basic...
US20080282136 Parity generation circuit, counter circuit, and counting method  
A circuit outputs, upon receipt of data and a parity of the data, count information on the number of bits in the data represented as a base-n number (n: a natural number equal to or larger than 2)...
US20070113163 Belief propagation decoder cancelling the exchange of unreliable messages  
The present invention relates a method and a decoder for decoding codewords, the decoding being performed as message passing on a graph representation of the code, e.g. on low density parity-check...
US20080294968 Ultra High-Speed Optical Transmission Based on LDPC-Coded Modulation and Coherent Detection for All-Optical Network  
An optical communication system includes a bit-interleaved coded modulation (BICM) coder; and a low-density parity-check (LDPC) coder coupled to the BICM coder to generate codes used as component...
US20050149845 Method of constructing QC-LDPC codes using qth-order power residue  
An LDPC encoding method in a digital communication system is provided, in which a parity-check matrix H having a plurality of circulant matrices as elements is first generated. A generation matrix...
US20080222499 CYCLIC COMPARISON METHOD FOR LOW-DENSITY PARITY-CHECK DECODER  
The present invention discloses a cyclic comparison method for an LDPC decoder, which applies to the comparators used in an LDPC decoder. According to the cyclic comparison algorithm of the...
US20050022101 Fast iteration termination of Turbo decoding  
Turbo encoded information that comprises first systematic bits, first parity bits, second systematic bits, and second parity bits is decoded by supplying the first systematic bits and the first...
US20140331110 CIRCUITS, INTEGRATED CIRCUITS, AND METHODS FOR INTERLEAVED PARITY COMPUTATION  
Circuits, integrated circuits, and methods are disclosed for interleaved parity computation. In one such example circuit, an interleaved parity computation circuit includes a first parity circuit...
US20130179758 CIRCUITS, INTEGRATED CIRCUITS, AND METHODS FOR INTERLEAVED PARITY COMPUTATION  
Circuits, integrated circuits, and methods are disclosed for interleaved parity computation. In one such example circuit, an interleaved parity computation circuit includes a first parity circuit...
US20100023847 Storage Subsystem and Method for Verifying Data Using the Same  
A subject of the invention is to propose a storage subsystem assuring high reliability and not impairing processing performance. The invention is a storage subsystem which includes a storage...
US20060150068 Parity signal generator  
Provided is a parity signal generator for generating a parity signal by continuously detecting a horizontal sync signal. The parity signal generator includes a first detecting unit for generating...
US20090106625 Basic Matrix, Coder/Encoder and Generation Method of the Low Density Parity Check Codes  
The invention relates to a base matrix, a encoder/decoder of Low Density Parity Check (LDPC) codes and a generation method thereof. The encoder/decoder is determined uniquely by the parity check...
US20090228771 MULTI-RATE LDPC CODE SYSTEM AND METHOD  
A method for creating cyclic permutation matrices P (810), with an arbitrary size Z×Z set by a parameter Z5 and which are used to create one or more LDPC related matrices in OFDMA systems,...
US20100058153 CHAINED CHECKSUM ERROR CORRECTION MECHANISM TO IMPROVE TCP PERFORMANCE OVER NETWORK WITH WIRELESS LINKS  
Data communication, with improved error detection, of a signal having a plurality of data blocks, by: error checking a received data block in a first sequence using a first polynomial, beginning...
US20090031200 High Rate, Long Block Length, Low Density Parity Check Encoder  
There is provided a parity check encoder (100) comprising a data memory (PROM) configured for storing input data, a calculation/parity result storage means (CPRSM), and a selector/serializer means...
US20110113312 CHECK MATRIX GENERATING METHOD, CHECK MATRIX, DECODING APPARATUS, AND DECODING METHOD  
A check matrix generating method of generating a check matrix (H) for decoding coded modulation data, which is encoded by a low-density parity check code and which is modulated by converting a-bit...
US20090204876 Method for Encoding a Data Message K' for Transmission from Sending Station to Receiving Station as Well as Method for Decoding, Sending Station, Receiving Station and Software  
Irregular LDPC codes have a construction which allows one to obtain a number of codes with different length from a single prototype code with a parity check matrix given by H=[Hz Hi], where Hz...
US20070094582 Encoding method to QC code  
In an encoding method to a self-orthogonal QC code whose parity check matrix is expressed by at least one circulant matrix, a code sequence is generated which satisfies a check matrix. The check...
US20050160351 Method of forming parity check matrix for parallel concatenated LDPC code  
Provided is a method of forming a parity-check matrix for a parallel concatenated LDPC code, wherein the parallel concatenated LDPC code is composed of a first LDPC code, a second LDPC code, and...
US20080092029 METHOD AND APPARATUS FOR ENCRYPTION WITH RAID IN STORAGE SYSTEM  
The described methodology provides users with the ability to specify flexible encryption options in a storage system using RAID technology. The users can use the system to achieve a configuration...
US20090113276 Method, apparatus, computer program product and device providing semi-parallel low density parity check decoding using a block structured parity check matrix  
The invention relates to low density parity check decoding. A method for decoding an encoded data block is described. Encoded data block comprising data sub-blocks are stored. Decoding is...
US20090070659 LDPC DECODER WITH AN IMPROVED LLR UPDATE METHOD USING A SET OF RELATIVE VALUES FREE FROM A SHIFTING ACTION  
In a decoder having an improved LLR (log-likelihood-ratio) update method is provided. The method comprising the steps of: providing a parity check matrix; and using merely a set of parameters on a...
US20070067705 NAND flash memory device performing error detecting and data reloading operation during copy back program operation  
A NAND flash memory device performing an error detecting and data reloading operation during a copy back program operation is provided. The device includes a cell array having a plurality of...
US20080178065 LDPC ENCODING AND DECODING OF PACKETS OF VARIABLE SIZES  
Techniques to support low density parity check (LDPC) encoding and decoding are described. In an aspect, LDPC encoding and decoding of packets of varying sizes may be supported with a set of base...
US20080155385 Apparatus and method to encode/decode block low density parity check codes in a communication system  
An apparatus and method to encode a block Low Density Parity Check (LDPC) code in a signal transmission apparatus is disclosed. The method includes generating a first block LDPC codeword by...
US20100100788 Programmable quasi-cyclic low-density parity check (QC LDPC) encoder for read channel  
The present invention is a programmable QC LDPC encoder for encoding user data. The encoder may be configurable for implementation with a read channel. The encoder may include a plurality of...
US20080126912 Storing data redundantly  
A method for storing data blocks, including forming the data blocks into groups comprising N·M data blocks, where N and M are different positive integers. For every group, the N·M data blocks are...
US20090063931 Methods and architectures for layered decoding of LDPC codes with minimum latency  
An embodiment of a decoder for decoding a Low-Density Parity-Check encoded input data includes a serial processing unit operating in clock cycles to perform serial update of the layers in the...
US20080059869 LOW COST, HIGH PERFORMANCE ERROR DETECTION AND CORRECTION  
A method and apparatus provides the ability to build and use low-density linear parity-check (LDPC) codes for implementing error detection and correction (EDC). A number of data bits and a number...
US20080294969 RATE-COMPATIBLE PROTOGRAPH LDPC CODE FAMILIES WITH LINEAR MINIMUM DISTANCE  
Digital communication coding methods are shown, which generate certain types of low-density parity-check (LDPC) codes built from protographs. A first method creates protographs having the linear...
US20080256183 APPARATUS, SYSTEM, AND METHOD FOR A FRONT-END, DISTRIBUTED RAID  
An apparatus, system, and method are disclosed for a front-end, distributed redundant array of independent drives (“RAID”). A storage request receiver module receives a storage request to store...
US20090077453 TECHNIQUE FOR REDUCING PARITY BIT-WIDTHS FOR CHECK BIT AND SYNDROME GENERATION FOR DATA BLOCKS THROUGH THE USE OF ADDITIONAL CHECK BITS TO INCREASE THE NUMBER OF MINIMUM WEIGHTED CODES IN THE HAMMING CODE H-MATRIX  
A technique for reducing parity bit-widths for check bit and syndrome generation through the use of additional check bits to increase the number of minimum weighted codes in the Hamming Code...
US20080294970 Method for implementing stochastic equality nodes  
The present invention relates to a decoding method and system for stochastic decoding of linear block codes with parity check matrix. Each encoded sample of a set of encoded samples is converted...
US20090083609 EFFICIENT LOW COMPLEXITY HIGH THROUGHPUT LDPC DECODING METHOD AND OPTIMIZATION  
A decoder and method for iteratively decoding of low-density parity check codes (LDPC) includes, in a code graph, performing check node decoding by determining messages from check nodes to...
US20080141103 Transmission device, encoding device and decoding device  
Disclosed is a transmission device which transmits a systematic code obtained by adding parity bits to information bits. When the code rate of the systematic code is a value in a specific range...
US20080282135 PARITY GENERATOR, PRIORITY ENCODER, AND INFORMATION PROCESSOR  
In order to generate a parity of output data from a priority encoder without increasing processing time or making the circuitry complex, the present invention a first level generator having a...
US20080134010 SENSOR DEVICE PROVIDED WITH A CIRCUIT FOR DETECTION OF SINGLE OR MULTIPLE EVENTS FOR GENERATING CORRESPONDING INTERRUPT SIGNALS  
A sensor device for an electronic apparatus, is provided with: a sensing structure generating a first detection signal; and a dedicated integrated circuit, connected to the sensing structure,...
US20090106626 LOW-DENSITY PARITY-CHECK CODE BASED ERROR CORRECTION FOR MEMORY DEVICE  
An accumulative repeat encoder can facilitate encoding data written to memory, such that parity data can be generated in accordance with a low-density parity-check (LDPC) code. The original data...

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