08433984 is referenced by 10 patents and cites 30 patents.

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 mB×nB may be used to encode a packet of kB=nB−mB information bits to obtain a codeword of nB 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·mB×L·nB. The lifted parity check matrix may be used to encode a packet of up to L·kB information bits to obtain a codeword of L·nB 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.

Title
LDPC encoding and decoding of packets of variable sizes
Application Number
12/18959
Publication Number
8433984 (B2)
Application Date
January 24, 2008
Publication Date
April 30, 2013
Inventor
Thomas Richardson
South Orange
NJ, US
Aamod Khandekar
San Diego
CA, US
Agent
S Hossain Beladi
Assignee
Qualcomm Incorporated
CA, US
IPC
H03M 13/00
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