Digital receiver with minimum cost index register
US5513220A · kind A · utility
1Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1993 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Nov 16, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03178
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Convolutionally encoded information subjected to channel intersymbol interference is decoded by calculating the minimum cost path through a trellis. The trellis terminates in known states. Exploiting the open architecture of the coprocessor, the minimum cost state is checked to ascertain if it is the known, that is, correct state and if it is not, the possible known states are searched by the DSP inside the ECCP active register and the state with the lowest cost amont the possible states is selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.