LDPC ENCODING AND DECODING OF PACKETS OF VARIABLE SIZES

• Main Authors: KHANDEKAR AAMOD, RICHARDSON THOMAS
• Format: Patent
• Language: English; Korean
• Published: 13.03.2013
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

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 B ( En 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 Lm B ( ELn B ) . The lifted parity check matrix may be used to encode a packet of up to Lk B information bits to obtain a codeword of Ln 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.