LDPC encoding and decoding of packets of variable sizes
US8433984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2008 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Jan 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1812
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.