Patent ID: 7953172
Filing Date: 2011-05-31
Classification: H04L

Abstract:
1. A method for transmitting a signal by a signal transmission apparatus in a communication system, the method comprising: determining, by the signal transmission apparatus, a Modulation and Coding Scheme (MCS) level or a modulation scheme to be used for an information vector to be transmitted; encoding, by the signal transmission apparatus, the information vector by using an encoding scheme corresponding to the determined MCS level or modulation scheme to thereby generate a codeword vector; and storing only one of identical parity check matrixes and a mapping relation between the one parity check matrix and corresponding MCS levels or modulation schemes, when any parity check matrixes of a Low Density Parity Check (LDPC) codes are identical, wherein the encoding scheme generates an LDPC code exhibiting optimal performance for each MCS level or modulation scheme utilized in the communication system and corresponds to a scheme for encoding the information vector using a parity check matrix from among a plurality of parity check matrixes of the LDPC code exhibiting optimal performance for each MCS level or modulation scheme.