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US20120204081 Iterative Decoder  
An iterative decoder for decoding a code block comprises a computation unit configured to perform forward and backward recursions over a code block or a code sub-block in each decoding iteration....
US20120117440 LOW DENSITY PARITY CHECK (LDPC) CODE  
Low density parity check code (LDPC) base parity check matrices and the method for use thereof in communication systems. The method of expanding the base check parity matrix is described. Examples...
US20140053038 Method for Selecting a LDPC Candidate Code  
A method for estimating error probability of LDPC codes includes ordering LDPC codes according to features in each code with known error characteristics. The method includes identifying features...
US20140223253 METHOD OF EARLY TERMINATION OF CHANNEL DECODING BY RE-ENCODING  
A method of early termination for channel decoding by re-encoding according to the invention at least includes a decoding unit, an encoding unit connected to the decoding unit, and a checking unit...
US20110154150 FAST STOCHASTIC DECODE METHOD FOR LOW DENSITY PARITY CHECK CODE  
Provided is a fast stochastic decoding method for a low density parity check (LDPC) code. The decoding method may include decoding the LDPC code based on an LDPC decoding scheme, using a message...
US20120266040 METHOD OF ERROR FLOOR MITIGATION IN LOW-DENSITY PARITY-CHECK CODES  
A digital communication decoding method for low-density parity-check coded messages. The decoding method decodes the low-density parity-check coded messages within a bipartite graph having check...
US20130332792 Symbol mapping for binary coding  
The present disclosure presents symbol mapping for any desired error correction code (ECC) and/or uncoded modulation. A cross-shaped constellation is employed to perform symbol mapping. The...
US20120192029 LDPC (Low Density Parity Check) codes with corresponding parity check matrices selectively constructed with CSI (Cyclic Shifted Identity) and null sub-matrices  
LDPC (Low Density Parity Check) codes with corresponding parity check matrices selectively constructed with CSI (Cyclic Shifted Identity) and null sub-matrices. An LDPC matrix corresponding to an...
US20110107175 LDPC (Low Density Parity Check) codes with corresponding parity check matrices selectively constructed with CSI (Cyclic Shifted Identity) and null sub-matrices  
LDPC (Low Density Parity Check) codes with corresponding parity check matrices selectively constructed with CSI (Cyclic Shifted Identity) and null sub-matrices. An LDPC matrix corresponding to an...
US20150188568 METHOD AND APPARATUS FOR DECODING NON-BINARY PARITY CHECK CODE  
A method of decoding a non-binary Low Density Parity Check (LDPC) code is provided. The method includes a plurality of messages to perform hard decision for all messages except for one message,...
US20110078533 SERIAL CONCATENATION OF TRELLISCODED MODULATION AND AN INNER NON-BINARY LDPC CODE  
A concatenated coded modulation communication system and method combines Trellis Coded Modulation with non-Gray code constellation mapping, interleaving, and non-binary Low Density Parity Check...
US20130173982 METHOD OF DECODING LDPC CODE FOR PRODUCING SEVERAL DIFFERENT DECODERS USING PARITY-CHECK MATRIX OF LDPC CODE AND LDPC CODE SYSTEM INCLUDING THE SAME  
Provided are a method of decoding an LDPC code for producing several different decoders using a parity-check matrix of the LDPC code, and an LDPC code system including the same. The system...
US20150019930 APPARATUS AND METHOD FOR DESIGNING QUANTUM CODE  
Provided is an apparatus for designing a quantum code, which includes an analyzing unit for analyzing at least one quantum error generated in a quantum error channel as at least one binary error...
US20100318873 Tree Decoding Method For Decoding Linear Block Codes  
A tree decoding method for decoding a linear block code is provided. According to the tree decoding method, an estimated path metric of node v is f(y)=g(v)+h(v), where g(v) represents a sum of bit...
US20130104007 CYCLICALLY INTERLEAVED DUAL BCH, WITH SIMULTANEOUS DECODE AND PER-CODEWORD MAXIMUM LIKELIHOOD RECONCILIATION  
A method and system are provided for forward error correction. Embodiments of the present disclosure provide a strong FEC algorithm that performs similarly to RS(255, 239) when a simple decoder is...
US20110307755 STRUCTURED LOW-DENSITY PARITY-CHECK (LDPC) CODE  
A method for constructing a low-density parity-check (LDPC) code using a structured base parity check matrix with permutation matrix, pseudo-permutation matrix, or zero matrix as constituent...
US20140068381 LDPC Decoder Irregular Decoding of Regular Codes  
The present inventions are related to systems and methods for irregular decoding of regular codes in an LDPC decoder, and in particular to allocating decoding resources based in part on data quality.
US20120240001 LDPC CODE FAMILY FOR MILLIMETER-WAVE BAND COMMUNICATIONS IN A WIRELESS NETWORK  
A method constructs a family of low-density-parity-check (LDPC) codes. The method includes identifying a code rate for an LDPC code in the family, identifying a protograph for the LDPC code, and...
US20110066916 SYSTEM AND METHOD FOR STRUCTURED LDPC CODE FAMILY  
A low density parity check (LDPC) family of codes is constructed by: determining a protograph for a mother code for the LDPC family of codes. The protograph is lifted by a lifting factor to design...
US20120290891 METHOD AND APPARATUS FOR DECODING LOW DENSITY PARITY CHECK CODE  
A low-density parity check (LDPC) code decoding method may be provided. The LDPC code decoding method may linearize or perform step-approximation on a natural logarithm hyperbolic cosine function...
US20110010602 METHOD AND APPARATUS FOR PERFORMING DECODING USING LDPC CODE  
A method of performing decoding using an LDPC code is disclosed. The method of performing decoding an encoded codeword using a parity check matrix, comprises decoding the codeword using the parity...
US20140351667 METHOD OF DECODING A CORRECTING CODE, FOR EXAMPLE A TURBO-CODE, BY ANALYSIS OF THE EXTENDED SPECTRUM OF THE WORDS OF THE CODE  
An improved decoding method is provided making it possible to solve the problem of the error floor of a turbo-code or of an LDPC code, or more generally of a correcting code from the family of...
US20150256198 ENCODING METHOD, DECODING METHOD  
An encoding method generates an encoded sequence by performing encoding of a given coding rate according to a predetermined parity check matrix. The predetermined parity check matrix is a first...
US20130262953 METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR DYNAMICALLY CONTROLLING A TURBO DECODING PROCESS IN A LONG TERM EVOLUTION (LTE) MULTI-USER EQUIPMENT (UE) TRAFFIC SIMULATOR  
According to one aspect, the subject matter described herein includes a method for dynamically controlling a Turbo decoding process in a long term evolution (LTE) multi-user equipment (UE) traffic...
US20110083058 TRAPPING SET BASED LDPC CODE DESIGN AND RELATED CIRCUITS, SYSTEMS, AND METHODS  
A method of generating a Tanner graph includes generating a pseudo-random parameter and selecting a subgraph within the Tanner graph to be designed, and assigning new edges to the subgraph as a...
US20100058141 STORAGE DEVICE AND CONTROL DEVICE  
A storage device stores identification information for identifying a pseudo-uncorrectable error sector, which is treated in a pseudo manner as a sector including an uncorrectable error, in the...
US20130055043 Two Low Complexity Decoding Algorithms for LDPC Codes  
In the present invention, two improved variants of the reliability-based iterative majority-logic decoding algorithm for regular low-density parity-check (LDPC) codes are presented. The new...
US20140289583 DECODING APPARATUS, DECODING METHOD, AND DECODING PROGRAM  
According to one embodiment, a decoding apparatus includes first and second acquisition units, a holding unit, a calculation unit, and a decision unit. The first acquisition unit acquires first...
US20110066917 Method and Apparatus for Elementary Updating a Check Node During Decoding of a Block Encoded with a Non-binary LDPC Code  
Method of elementary updating a check node of a non-binary LDPC code during, comprising receiving a first input message (U) and a second input message (V) each comprising nm doublets having a...
US20110307754 FAMILY OF LDPC CODES FOR VIDEO BROADCASTING APPLICATIONS  
A family of quasi cyclic irregular low density parity check codes for video broadcasting applications. The parity check matrices of the constructed low density parity check codes have quasi-cyclic...
US20110283164 CONFIGURABLE CODING SYSTEM AND METHOD OF MULTIPLE ECCS  
A configurable coding system and method of multiple error correcting codes (ECCs) for a memory device or devices are disclosed. The system includes an ECC codec that selectively performs different...
US20130283117 LOW-DENSITY PARITY-CHECK CODE DECODER AND DECODING METHOD  
Provided is a low-density parity-check (LDPC) code decoder and a decoding method. The decoding method may include calculating a message of a variable node (V-node), calculating a message of a...
US20150039960 ENCODING AND DECODING TECHNIQUES USING LOW-DENSITY PARITY CHECK CODES  
Some embodiments include apparatus and methods for encoding message information. Such apparatus and methods can include using a parity check matrix of a low-density parity check (LDPC) code to...
US20150194983 READ THRESHOLD CALIBRATION FOR LDPC  
Apparatuses and methods for soft read threshold location calibration are provided. One example method can include selecting read threshold sets (RTSs), and determining log-likelihood-ratios (LLRs)...
US20130283119 Method and Apparatus for Elementary Updating a Check Node During Decoding of a Block Encoded with a Non-binary LDPC Code  
Method of elementary updating a check node of a non-binary LDPC code during a decoding of a block encoded with said LDPC code, comprising receiving a first input message (U) and a second input...
US20110051831 UNIFIED ITERATIVE DECODING ARCHITECTURE USING JOINT LLR EXTRACTION AND A PRIORI PROBABILITY  
Certain aspects of the present disclosure relate to a method and an apparatus for unified iterative demodulation-decoding that can be employed in both multiple-input multiple-output (MIMO) and...
US20140095955 Efficient Way to Construct LDPC Code by Comparing Error Events Using a Voting Based Method  
A method for ordering trapping sets to find one or more dominant trapping sets includes analyzing a trapping set and a random set of codewords to generate a distance value for each trapping set,...
US20150039959 METHOD FOR DECODING A CORRECTING CODE WITH MESSAGE PASSING, IN PARTICULAR FOR DECODING LDPC CODES OR TURBO CODES  
A method for iteratively decoding a word of a correcting code by an iterative decoding algorithm in the course of which, for each bit of said code word, at least one extrinsic information item is...
US20150200686 ENCODING DEVICE, DECODING DEVICE, AND OPERATING METHOD THEREOF  
An encoding device includes a first encoder that generates a message matrix including a plurality of message blocks and a parity block having parity information of the plurality of message blocks,...
US20100122140 Algebraic construction of LDPC (Low Density Parity Check) codes with corresponding parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices  
Algebraic method to construct LDPC (Low Density Parity Check) codes with parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices. A novel approach is presented by which identity...
US20130031438 MULTI-RATE LDPC DECODING  
The subject technology provides a decoding solution that supports multiple choices of code rates. A decoder may be configured to receive a selected code rate from a plurality of code rates. On the...
US20110010599 N-WAY PARITY TECHNIQUE FOR ENABLING RECOVERY FROM UP TO N STORAGE DEVICE FAILURES  
An n-way parity protection technique enables recovery of up to n storage device (e.g., disk) failures in a parity group of a storage array encoded to protect against n-way disk failures. The...
US20100306613 METHOD OF MULTIUSER PRECODING AND SCHEDULING AND BASE STATION FOR IMPLEMENTING THE SAME  
The present invention provides a method of multiuser precoding and scheduling, comprising: feeding channel state information (CSI) and statistic properties of CSI error back to a base station (BS)...
US20130007554 Dynamically Scaled LLR For An LDPC Decoder  
A method for decoding an LDPC (low-density parity check) code word. The method includes receiving a plurality of LLR (log likelihood ratio) terms from a demodulation unit of a receiver and...
US20110154151 CHECK MATRIX CREATION DEVICE, CHECK MATRIX CREATION METHOD, CHECK MATRIX CREATION PROGRAM, TRANSMITTER, RECEIVER, AND COMMUNICATION SYSTEM  
A check matrix creation device includes a circulant permutation matrix setting unit 12 for preparing a plurality of circulant permutation matrices each having an inner diameter of six or larger,...
US20130139025 CONSTRUCTION OF MULTI RATE LOW DENSITY PARITY CHECK CONVOLUTIONAL CODES  
The present disclosure is directed to a device that allows the construction of multi-rate accumulative LDPC convolutional codes (LDPC CCs) based on a mother code with an arbitrary code rate....
US20130151922 LOW DENSITY PARITY CHECK DECODER FOR IRREGULAR LDPC CODES  
A method and system for decoding low density parity check (“LDPC”) codes. An LDPC decoder includes a control unit that controls decoder processing, the control unit causing the decoder to process...
US20130339814 Method for Processing Messages for Outsourced Storage and Outsourced Computation by Untrusted Third Parties  
A message is stored and processed by an untrusted third party by generating a codeword using a selected one of a set of error correcting codes (ECC). The selected ECC depends on a weight rate of...
US20110119554 METHOD FOR TRANSMITTING NON-BINARY CODES AND DECODING THE SAME  
The invention relates to a decoding method for non-binary codes, in particular non-binary LDPC codes, amenable to representation by a bipartite graph representing N variables and M constraints....
US20120017133 MANAGEMENT OF DECODING EFFORT IN AN ITERATIVE DECODING SCENARIO  
Schemes for creating a surplus of decoding iterations in a decoder are described. The surplus can be used to augment the decoding of signal blocks. The option of using an idle decoder to decode...