Apparatus and method for transmitting/receiving signal in a communication system
US7908541B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 21, 2007 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Jan 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/27
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A signal transmission apparatus in a communication system is disclosed. A channel interleaver generates an interleaved vector by channel-interleaving a Low Density Parity Check (LDPC) codeword according to a channel interleaving rule, and a modulator generates a modulation symbol by modulating the interleaved vector according to a modulation scheme. The channel interleaving rule is one of a first channel interleaving rule and a second channel interleaving rule. The first channel interleaving rule is a rule for setting degree distribution for nodes in a factor graph of the LDPC codeword separately for individual levels supported by the modulation scheme. The second channel interleaving rule is a rule for allowing coded bits included in the LDPC codeword to be interleaved according to an unequal error characteristic of the modulation scheme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.