|
Match
|
Document |
Document Title |
|
|
7644335 |
In-place transformations with applications to encoding and decoding various classes of codes
In an encoder for encoding symbols of data using a computing device having memory constraints, a method of performing a transformation comprising loading a source block into memory of the computing...
|
|
|
7644336 |
Techniques for providing greater error protection to error-prone bits in codewords generated from irregular codes
Greater error protection is provided to error-prone bits that are generated from irregular soft-decoded error correction codes. Error protection is increased to error-prone bits that of interest in...
|
|
|
7644345 |
Bit distributor for multicarrier communication systems employing adaptive bit loading for multiple spatial streams and methods
In a multicarrier transmitter that transmits two or more spatial data streams, a bit distributor assigns encoded bits to the spatial data streams based on bit-loading capabilities of the streams...
|
|
|
7636298 |
Apparatus and method for packet error correction
A packet error correcting apparatus includes a retransmission request controlling unit controlling a timing of transmission of a retransmission request to a packet transmitting apparatus from a...
|
|
|
7636724 |
Data storage system and method by shredding and deshredding
A system and method for data storage by shredding and deshredding of the data allows for various combinations of processing of the data to provide various resultant storage of the data. Data...
|
|
|
7636397 |
Method and apparatus for transmitting and receiving convolutionally coded data for use with combined binary phase shift keying (BPSK) modulation and pulse position modulation (PPM)
A method and apparatus for transmitting and receiving convolutionally coded data in a communication system employing a combination of Pulse Position Modulation (PPM) and Binary Phase Shift Keying...
|
|
|
7634711 |
Information coding by algebraic geometric code offering two decoding options
The present invention concerns a method of coding information symbols according to a code defined on a Galois field F q , where q is an integer greater than 2 and equal to a power of a prime...
|
|
|
7630456 |
Method and/or apparatus to efficiently transmit broadband service content using low density parity code based coded modulation
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate an MPEG packet data stream. The second circuit may be configured to (i) scramble the...
|
|
|
7631241 |
Apparatus and method for decoding low density parity check codes
An apparatus and method for decoding low density parity check (LDPC) codes are provided. A memory module configured by a plurality of unit memories stores a reliability value. Variable node...
|
|
|
7624326 |
Encoding device and method, decoding device and method, program, and recording medium
An encoding device for differential encoding/decoding a plurality of pieces of position information, represented in a rational number and arranged in the order of magnitude, includes a position...
|
|
|
7620871 |
Method and measuring device for determining an error rate without incremental redundancy
A method and device are described for determining an error rate during transmission from a transmitter/receiver station to a transmitter/receiver device and a measuring device. A first data block...
|
|
|
7620874 |
Recording method for recording data on a recording medium
If a large minimum data unit for recorded data is used to record a small data amount of management information, the recording time is long, and furthermore when a WO (write once) is used as the...
|
|
|
7620880 |
LDPC concatenation rules for IEEE 802.11n system with packets length specified in OFDM symbols
A method of concatenation for LDPC encoding in an OFDM wireless system selects codewords based on the data packet payload size, wherein the payload size is the number of transmitted information...
|
|
|
7620873 |
Encoder, decoder, methods of encoding and decoding
An information sequence having a code length of N (N=K+M), where K is information length and M is parity length, is encoded into a code sequence by using an LDPC code. The LDPC code is generated...
|
|
|
7617433 |
Implementation of LDPC (low density parity check) decoder by sweeping through sub-matrices
Implementation of LDPC (Low Density Parity Check) decoder by sweeping through sub-matrices. A novel approach is presented by which an LDPC coded signal is decoded processing the columns and rows of...
|
|
|
7617432 |
Hierarchical design and layout optimizations for high throughput parallel LDPC decoders
High throughput parallel LDPC decoders are designed and implemented using hierarchical design and layout optimization. In a first level of hierarchy, the node processors are grouped on the LDPC...
|
|
|
7617439 |
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...
|
|
|
7613243 |
Interleaver and parser for OFDM MIMO systems
A MIMO wireless system includes a transmitter that has a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the...
|
|
|
7613256 |
Forward error correction in a distribution system
A multimedia distribution system is disclosed. The distribution system includes a transmitter unit that distributes content from a content provider to one or more wireless subscriber units. The...
|
|
|
7607064 |
Serial asynchronous interface with slip coding/decoding and CRC checking in the transmission and reception paths
A transmitting/receiving unit for asynchronous data transmission has a CRC unit and a transmission FIFO in a transmission path. A coding unit for SLIP-coding of data to be transmitted can...
|
|
|
7607063 |
Decoding method and device for decoding linear code
The present invention relates to a decoding method and a decoder, a program, a recording-and-reproducing apparatus and a method, and a reproducing apparatus and a method that are suitable for...
|
|
|
7603607 |
Decoding unit and preprocessing unit implemented according to low density parity check code system
In processing of calculating outer value log-ratio αmn by a row processing unit performing an operation on rows of a parity check matrix, a minimum absolute value and a second minimum absolute...
|
|
|
7603610 |
Coding a video data stream with unequal error protection based activity
A method adapted to detect the activity of individual partitions within a packetized frame. The method provides for the encoding of those portions of the data stream having higher activity more...
|
|
|
7603608 |
Data processing method, data recording apparatus and data transmission apparatus
Systems and methods for ending, storing and transmitting data generate error correcting code words for data that is provided for each of a plurality of channels. The error correcting code words...
|
|
|
7600180 |
Iterative metric updating when decoding LDPC (low density parity check) coded signals and LDPC coded modulation signals
Iterative metric updating when decoding LDPC (Low Density Parity Check) coded signals and LDPC coded modulation signals. A novel approach is presented for updating the bit metrics employed when...
|
|
|
7594154 |
Encoding and decoding modules with forward error correction
To support a forward error correction scheme, in which a code of the forward error correction scheme is employed at a transmitting end for encoding data for a transmission to a receiving end, the...
|
|
|
7594155 |
Recording and reproducing data to/from a recording medium having a user data area and an information area for storing information about the recording medium
If a large minimum data unit for recorded data is used to record a small data amount of management information, the recording time is long, and furthermore when a WO (write once) is used as the...
|
|
|
7594023 |
Data carousel receiving and caching
Data objects are sent using a data carousel and forward error correction. This involves segregating a file into groups, wherein each group represents k data blocks. From the k data blocks of each...
|
|
|
7590915 |
Recording and reproducing data to/from a recording medium having a user data area and an information area for storing information about the recording medium
If a large minimum data unit for recorded data is used to record a small data amount of management information, the recording time is long, and furthermore when a WO (write once) is used as the...
|
|
|
RE40918 |
Method and device for transmitting data frames
The method has two possible transmission modes: a first mode whereby a first transmitter ( 1 ) sends frames including sufficient auxiliary data to enable a first receiver ( 2 ) to acquire frame...
|
|
|
7590914 |
Decoding apparatus for low-density parity-check codes using sequential decoding, and method thereof
Disclosed is a decoding apparatus for LDPC (Low-Density Parity-Check) codes when receiving data encoded with LDPC codes on a channel having consecutive output values, and a method thereof. The...
|
|
|
7590170 |
Method and apparatus for measuring jitter
A system and method for characterizing the jitter of a periodic signal. Samples of the signal are taken with a sampling device. A set of samples representing a particular value of the signal in...
|
|
|
7587653 |
Decoding method for detecting PLSC from frames of satellite broadcasting system
Provided is a decoding method for detecting Physical Layer Signaling Codes (PLSCs) from frames of a satellite broadcasting system. The method includes: a) acquiring a summation vector and a...
|
|
|
7584399 |
Apparatus and method for transmitting and receiving a signal in a communication system
An apparatus and method for transmitting a signal in a communication system. An information vector is encoded using a structured low density parity check (LDPC) coding scheme supporting a first...
|
|
|
7577891 |
Method and apparatus for extending decoding time in an iterative decoder using input codeword pipelining
A decoder architecture and method for implementing a decoder are provided. In one implementation, the decoder architecture includes an input buffer configured to receive a plurality of codewords to...
|
|
|
7574179 |
Mobile broadband wireless network with interference mitigation mechanism to minimize interference within a cluster during multiple concurrent transmissions
A mobile broadband wireless system including at least two pairs of nodes arranged in a cluster, each pair coupled to form a link for wireless communication. Each node includes an RF transceiver...
|
|
|
7571375 |
Methods for message passing decoding using simultaneous memory accesses
Respective memory locations are assigned for respective edges linking processing nodes of a decoder comprising a plurality of processing nodes. The decoder is applied to a coded input signal to...
|
|
|
7562279 |
2D-normalized min-sum decoding for ECC codes
A method for decoding error-correcting codes normalizes messages generated by a bit node processor, and normalizes messages generated by the check node processor.
|
|
|
7559010 |
Short length LDPC (Low Density Parity Check) code and modulation adapted for high speed Ethernet applications
A short length LDPC (Low Density Parity Check) code and modulation adapted for high speed Ethernet applications. In some instances, the short length LDPC code and modulation may be employed within...
|
|
|
7552375 |
Method, an encoder and communication device for individually encoding code block segments
A method of encoding data in a code block comprising an information bit sequence in a communication device of a communication system comprising the step of separating the information bit sequence...
|
|
|
7549103 |
Data encoding method for error correction
A data encoding method for error correction is provided. Before recording data into a recording media, the data are added with an Error Correction Code (ECC) comprising Check Sum on Row (CSR) and...
|
|
|
7543211 |
Toggle memory burst
A controller for a toggle memory that performs burst writes by reading a group of bits in the toggle memory and comparing each received data word of the burst with a portion of the group to...
|
|
|
7543212 |
Low-density parity-check (LDPC) encoder
The encoder chip of the present invention uses LDPC codes to encode input message data at a transmitting end, thereby generating a series of codewords. The encoder chip implements two low-density...
|
|
|
7539919 |
Optical recording medium, apparatus and method of recording/reproducing data thereon/therefrom, and computer-readable recording medium storing program to perform the method
A recording medium on which a recording/reproducing unit block is recorded, an apparatus to record and/or reproduce data on/from the recording medium, and a method of recording/reproducing the data...
|
|
|
7539918 |
System and method for generating cyclic codes for error control in digital communications
A K-bit information signal represented by a polynomial U(x) having a degree K−1 is received. The information signal is transformed to form a transformed information signal using a first transform...
|
|
|
7536623 |
Method and apparatus for generating a low-density parity check code
A low density parity check (LDPC) code generating method and apparatus are provided. A parity check matrix with (N−K) rows for check nodes and N columns for variable nodes are formed to encode an...
|
|
|
7530002 |
Sub-matrix-based implementation of LDPC (Low Density Parity Check) decoder
Sub-matrix-based implementation of LDPC (Low Density Parity Check) decoder. A novel approach is presented by which an LDPC coded signal is decoded by processing 1 sub-matrix at a time. A low...
|
|
|
7522073 |
Self-adapted bus inversion
Embodiments of the invention generally provide methods, systems, and articles of manufacture for selecting a data bus inversion (DBI) mode of operation. A comparison circuit of a device may receive...
|
|
|
7523375 |
Set of irregular LDPC codes with random structure and low encoding complexity
A set of irregular LDPC (Low Density Parity Check) codes having a pseudo-random structure and low encoding complexity. A block-cyclic LDPC code has an irregular row or an irregular column weight...
|
|
|
7523374 |
Method and apparatus for initial BCH decoding in a WCDMA system
When an initial frame alignment during decoding of multi-frame data segments fails a cyclic parity check, a portion of the received data is retained and reused for a second decode attempt using a...
|