The application provides a channel encoding method, an encoding apparatus, and a system. A bit sequence X.sub.1.sup.N is output by using X.sub.1.sup.N=D.sub.1.sup.NF.sub.N, where D.sub.1.sup.N is a bit sequence obtained after an input bit sequence u.sub.1.sup.N is encoded based on locations of K to-be-encoded information bits in an encoding diagram that has a mother code length of N, u.sub.1.sup.N is a bit sequence obtained based on the K to-be-encoded information bits, and F.sub.N is a Kronecker product of log.sub.2 N matrices F.sub.2. A design considers that the locations of the K to-be-encoded information bits in the encoding diagram that has a mother code length of N include a row location index set H of the information bits in the encoding diagram and a layer location index set M of the information bits in the encoding diagram, where 0≤H≤N, and 0<M≤log.sub.m N−1.

Certain aspects of the present disclosure generally relate to techniques for puncturing of structured low-density parity-check (LDPC) codes. Certain aspects of the present disclosure generally relate to methods and apparatus for a high-performance, flexible, and compact LDPC code. Certain aspects can enable LDPC code designs to support large ranges of rates, blocklengths, and granularity, while being capable of fine incremental redundancy hybrid automatic repeat request (IR-HARD) extension while maintaining good floor performance, a high-level of parallelism to deliver high throughout performance, and a low description complexity.

The present invention provides an apparatus of transmitting broadcast signals, the apparatus including, an encoder for encoding service data, a frame builder for building at least one signal frame by mapping the encoded service data, a modulator for modulating data in the built at least one signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, scheme and a transmitter for transmitting the broadcast signals having the modulated data.

A method begins by a processing module of a storage network receiving a first plurality of pairs of coded values corresponding to first data segments of a first data stream and a second data stream. The method continues with the processing module generating a received coded matrix to include a plurality of groups of selected coded values and when the received coded matrix includes a decode threshold number of pairs of coded values, generating a data matrix from the received coded matrix and an encoding matrix. The method continues with the processing module reproducing the first data segment of the first and second data streams, while maintaining the time alignment of the first and second data streams.

A zero padding apparatus and method for fixed length signaling information are disclosed. A zero padding apparatus according to an embodiment of the present invention includes a processor configured to generate a LDPC information bit string by deciding a number of groups whose all bits are to be filled with 0 using a difference between a length of the LDPC information bit string and a length of a BCH-encoded bit string, selecting the groups using a shortening pattern order to fill all the bits of the groups with 0, and filling at least a part of remaining groups, which are not filled with 0, with the BCH-encoded bit string; and memory configured to provide the LDPC information bit string to an LDPC encoder.

A transmitter is provided. The transmitter includes: a segmenter configured to segment information bits into a plurality of blocks based on one of a plurality of preset reference values; an outer encoder configured to encode each of the plurality of blocks to generate first parity bits; and a Low Density Parity Check (LDPC) encoder configured to encode each of the plurality of blocks and the first parity bits to generate an LDPC codeword including second parity bits, wherein the one of the preset reference values is determined depending on at least one of a code rate used to encode each of the plurality of blocks and the first parity bits and whether to perform repetition of at least a part of the LDPC codeword in the LDPC codeword.

A transmitter is provided. The transmitter includes: a Low Density Parity Check (LDPC) encoder configured to encode input bits to generate an LDPC codeword including the input bits and parity bits to be transmitted to a receiver in a current frame; a repeater configured to repeat, in the LDPC codeword, at least some bits of the LDPC codeword in the LDPC codeword so that the repeated bits are to be transmitted in the current frame; a puncturer configured to puncture some of the parity bits; and an additional parity generator configured to select at least some bits of the LDPC codeword including the repeated bits, and generate additional parity bits to be transmitted in a previous frame of the current frame.

A transmitter is provided. The transmitter includes: a Low Density Parity Check (LDPC) encoder configured to encode outer-encoded bits to generate an LDPC codeword including LDPC information bits and parity bits; a puncturer configured to puncture some of the parity bits included in the LDPC codeword; and a mapper configured to map the LDPC codeword except the punctured parity bits to symbols for transmission to a receiver, wherein the puncturer calculates a number of parity bits to be punctured among the parity bits included in the LDPC codeword based on a number of the outer-encoded bits, a number of the LDPC information bits, and a minimum number of parity bits to be punctured among the parity bits included in the LDPC codeword.

Provided is an encoding method and device and a decoding method and device for structured LDPC. The encoding method includes: determining a base matrix used for encoding and performing an LDPC encoding operation on a source information bit sequence according to the base matrix and an expansion factor Z corresponding to the base matrix to obtain a codeword sequence, where Z is a positive integer. The base matrix includes multiple submatrices and the submatrices include an upper-left submatrix Hb1 and an upper-left submatrix Hb2, and the upper-left submatrix Hb1 is an upper-left submatrix of the upper-left submatrix Hb2.

A wireless communication device serving as an NG60 WiGig device includes a PPDU generator that generates an MF control PHY PPDU (physical layer protocol data unit) including a legacy preamble, a legacy header, an NG60 header (a non-legacy header), a data field, and identification information indicating that the non-legacy header is included in the PPDU and a transmitter that transmits the generated MF control PHY PPDU.