System of and method for decoding trellis codes
US6865711B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2001 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Aug 16, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0065
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Systems and related methods are described for (1) determining one or more state probabilities for one or more states in a trellis representation; (2) determining an estimate of or extrinsic output for one or more bits using a trellis representation; (3) determining a branch metric for a branch in a trellis representation; (4) performing a MAX*2->1 operation; (5) performing a MAX*2p->1 operation, where p is an integer of two or more, through a hierarchical arrangement of MAX*2->1 operations; and (6) computing forward state probabilities in a forward mode of operation and computing backward state probabilities in a backward mode of operation. Combinations of the foregoing are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.