LDPC ENCODING AND DECODING OF PACKETS OF VARIABLE SIZES

摘要

Techniques to support low density parity check (LDPC) encoding and decoding are described. In an aspect, LDPC encoding and decoding of packets of varying sizes may be supported with a set of base parity check matrices of different dimensions and a set of lifting values of different powers of two. A base parity check matrix G of dimension m_BOE_B may be used to encode a packet of k_B=n_B-m_B information bits to obtain a codeword of n_B code bits. This base parity check matrix may be "lifted" by a lifting value of L to obtain a lifted parity check matrix H of dimension L·m_BOE·n_B. The lifted parity check matrix may be used to encode a packet of up to L·k_Binformation bits to obtain a codeword of L·n_B code bits. A wide range of packet sizes may be supported with the set of base parity check matrices and the set of lifting values.