Patent application number | Description | Published |
20140310577 | TRANSMITTING APPARATUS, INTERLEAVING METHOD THEREOF, RECEIVING APPARATUS, AND DEINTERLEAVING METHOD THEREOF - A transmitting apparatus and method, and a receiving apparatus and method are provided. The transmitting apparatus includes: an encoder configured to perform encoding on data including information bits; and a bit interleaver configured to perform interleaving on the information bits and parity bits generated by the encoding, wherein the bit interleaver is configured to classify the generated parity bits into a plurality of groups and write the information bits and the generated parity bits in a plurality of columns in a column direction such that parity bits included in a predetermined group among the plurality of groups are arranged in predetermined positions in the plurality of columns, to perform the interleaving. | 10-16-2014 |
20140372825 | METHOD AND APPARATUS FOR ENCODING AND DECODING OF LOW DENSITY PARITY CHECK CODES - An encoding apparatus is provided. The encoding includes a low density parity check (LDPC) encoder which performs LDPC encoding on input bits based on a parity-check matrix to generate an LDPC codeword formed of 64,800 bits, in which the parity-check matrix includes an information word sub-matrix and a parity sub-matrix, the information word sub-matrix is formed of a group of a plurality of column blocks each including 360 columns, and the parity-check matrix and the information word sub-matrix are defined by various tables which represent positions of value one (1) present in every 360-th column. | 12-18-2014 |
20140372826 | APPARATUSES AND METHODS FOR ENCODING AND DECODING OF PARITY CHECK CODES - An encoding apparatus is provided. The encoding apparatus includes: a low density parity check (LDPC) encoder configured to generate an LDPC codeword formed of 16200 bits by performing LDPC encoding based on a parity check matrix, wherein the parity check matrix includes an information word sub-matrix and a parity sub-matrix, the information word sub-matrix being formed of a plurality of column groups each including 360 columns and being defined as a table indicating a position of one (1) present in each 360-th column. | 12-18-2014 |
20150039973 | TRANSMITTER APPARATUS AND SIGNAL PROCESSING METHOD THEREOF - A transmitter apparatus and a receiver apparatus are provided. The transmitter apparatus includes: an encoder configured to generate a low density parity check (LDPC) by performing LDPC encoding; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol. The modulator maps a bit included in a predetermined group from among a plurality of groups constituting the LDPC codeword onto a predetermined bit in the modulation symbol. | 02-05-2015 |
20150071376 | TRANSMITTING APPARATUS, METHOD OF MAPPING DATA THEREOF, RECEIVING APPARATUS, DATA PROCESSING METHOD THEREOF - A method of processing data of an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a transmitter and a receiver processing the OFDM symbol are provided. The method performed by the transmitter includes: mapping first data and second data to an OFDM symbol and transmitting a frame including the OFDM symbol. The mapping includes additionally mapping at least a portion of the second data to cells of the OFDM symbol which remain after the first data and the second data are mapped to the OFDM symbol. | 03-12-2015 |
20150074485 | TRANSMITTER, RECEIVER, AND SIGNAL PROCESSING METHOD THEREOF - A transmitter and receiver of a broadcasting signal and a method of processing the broadcasting signal are provided. The transmitter includes: a segmenter configured to segment an L1 signaling of a frame into a plurality of segmented L1 signalings such that each of the segmented L1 signalings has bits a number of which is equal to or smaller than a predetermined number; and an encoder configured to perform a Bose, Chaudhuri, Hocquenghem (BCH) and a low density parity check (LDPC) encoding, or the LDPC encoding without the BCH encoding, with respect to the segmented L1 signalings. | 03-12-2015 |
20150078476 | TRANSMITTER AND ZERO BITS PADDING METHOD THEREOF - Provided are a transmitter, a receiver and methods of padding and depadding zero bits to an L1-post signaling. The transmitter includes: a zero padder configured to divide an information word into a plurality of groups, pad zero bits to at least one of the plurality of groups by group unit, and pad additional zero bits to at least one of the plurality of groups remaining after the zero bits are padded, thereby constituting the information word for encoding the L1-post signaling; and an encoder configured to perform encoding on the information word for encoding the L1-post signaling, wherein the zero padder pads the additional zero bits according to a predetermined criterion, starting from a front end or a back end of the at least one of the remaining groups. | 03-19-2015 |
20150082113 | TRANSMITTING APPARATUS, AND PUNCTURING METHOD THEREOF - There is provided a transmitting apparatus. The transmitting apparatus includes an encoder configured to perform Low Density Parity Check (LDPC) encoding with respect to input data, based on a parity check matrix, a parity interleaver configured to interleave parity bits from among LDPC codewords generated by the LDPC encoding, and a puncturer configured to puncture at least a part of the interleaved parity bits, and the puncturer groups the parity bits based on an interval at which a pattern of columns is repeated in an information word sub matrix constituting the parity check matrix and perform puncturing based on the number of punctured parity bits and a position of punctured parity bit groups from among the grouped parity bit groups. | 03-19-2015 |
20150082117 | TRANSMITTER AND SIGNAL PROCESSING METHOD THEREOF - A transmitter, a receiver and methods of controlling the transmitter and the receiver are provided. The transmitter includes: a Low Density Parity Check (LDPC) encoder configured to generate an LDPC codeword by performing LDPC encoding on an L1 post signaling; a demux configured to demultiplex a plurality of bits constituting the L1 post signaling of the LDPC codeword; and a modulator configured to modulate the demultiplexed bits. | 03-19-2015 |
20150082118 | TRANSMITTING APPARATUS AND PUNCTURING METHOD THEREOF - Provided are a transmitting apparatus, a receiving apparatus and methods of puncturing and depuncturing of parity bits. The transmitting apparatus includes: a zero padder configured to pad at least one zero bit to input bits; an encoder configured to generate a Low Density Parity Check (LDPC) codeword by performing LDPC encoding with respect to the bits to which the at least one zero bit is padded; a parity interleaver configured to interleave LDPC parity bits constituting the LDPC codeword; and a puncturer configured to puncture at least a part of the interleaved LDPC parity bits based on a pre-set puncturing pattern. | 03-19-2015 |
20150082131 | TRANSMITTING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF - A transmitting apparatus and a receiving apparatus are provided. The transmitting apparatus includes: an encoder configured to generate a low density parity check (LDPC) codeword by performing LDPC encoding; an interleaver configured to interleave the LDPC codeword; and a modulator configured to modulate the interleaved LDPC codeword according to a modulation method to generate a modulation symbol. The interleaver includes a block interleaver formed of a plurality of columns each comprising a plurality of rows, and the block interleaver is configured to divide the plurality of columns into at least two parts and interleave the LDPC codeword. | 03-19-2015 |
20150082132 | TRANSMITTER AND PUNCTURING METHOD THEREOF - Provided are a transmitter for processing an L1 signaling including an L1-pre signaling and an L1-post signaling, a receiver of the L1 signaling, and methods of controlling the transmitter and the receiver. The transmitter includes: an encoder configured to perform Bose, Chaudhuri, Hocquenghem (BCH) encoding and Low Density Parity Check (LDPC) encoding with respect to the L1-post signaling, and a puncturing unit configured to puncture at least a part of LDPC parity bits constituting an LDPC codeword generated by the LDPC encoding of the L1-post signaling, wherein the number of bits to be punctured is calculated based on the number of bits available for transmission of the LDPC codeword and a modulation order of the L1-post signaling. | 03-19-2015 |
20150089321 | TRANSMITTING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF - A transmitting apparatus and a receiving apparatus are provided. The transmitting apparatus includes: an encoder configured to generate a low density parity check (LDPC) codeword by performing LDPC encoding; an interleaver configured to interleave the LDPC codeword; and a modulator configured to modulate the interleaved LDPC codeword according to a modulation method to generate a modulation symbol. The interleaver is formed of a plurality of columns including a plurality of rows, respectively, and comprises: a block interleaver configured to divide each of the plurality of columns into a first part and a second part, and interleave a plurality of bit groups constituting the LDPC codeword, all bit groups interleaved by the first part are interleaved as bits included in a same bit group are written in a same column of the first part, at least one bit group interleaved by the second part is interleaved as bits included in the at least one bit group are divided and written in at least two columns constituting the second part. | 03-26-2015 |