Multi-channel trellis encoder/decoder
US4980897A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1988 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Aug 12, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3427
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multi-channel trellis encoder/decoder is disclosed for use with multi-channel data transmission systems. For each data transmission symbol interval, trellis encoding is applied across all available channels, and for each data reception symbol interval trellis decoding is applied across all available channels. In comparision with systems employing independent trellis encoding along each available channel, the present invention reduces data throughput delays by roughly an order of magnitude, and reduces implementation complexity by roughly a factor equal to the number of transmission channels. Further, the multi-channel trellis encoder will permit different data transmission rates as well as permitting variations in signal power and/or noise power from channel to channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.