Patent ID: 7584399
Filing Date: 2009-09-01
Classification: H04L

Abstract:
1. A method for transmitting a signal in a communication system, the method comprising: receiving an information vector to transmit; generating a first structured low density parity check (LDPC) codeword vector including a first part mapped to the information vector and a second part mapped to a parity vector by encoding the information vector using a structured LDPC coding scheme supporting a first coding rate; transmitting the first structured LDPC codeword vector to a signal reception apparatus; detecting an error occurred upon reception of the first structured LDPC codeword vector; generating a second structured LDPC codeword vector including the first part, the second part, and a third part mapped to an additional parity vector by encoding the information vector using a structured LDPC coding scheme supporting a second coding rate; and transmitting the third part of the second structured LDPC codeword vector to the signal reception apparatus.