Compress-forward coding with N-PSK modulation for the half-duplex gaussian relay channel
US8363747B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2011 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Apr 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2001/0097
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods that implement compress-forward (CF) coding with N-PSK modulation for the relay channel are disclosed, where N is greater than or equal to two. In the CF scheme, Wyner-Ziv coding is applied at the relay to exploit the joint statistics between signals at the relay and the destination. Quantizer design and selection of channel code parameters are discussed. Low-density parity check (LDPC) codes are used for error protection at the source, and nested scalar quantization (NSQ) and irregular repeat accumulate (IRA) codes for Wyner Ziv coding (or more precisely, distributed joint source-channel coding) at the relay. The destination system decodes original message information using (a) a first signal received from the source in a first interval and (b) a second signal that represents a mixture of transmissions from the source and relay in the second interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.