Viterbi decoder for wireline modems
US4709377A · kind A · utility
35Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1985 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Mar 13, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/38
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Viterbi decoder is disclosed particularly suited for implementation in a microprocessor-based modem. The decoder calculates the branch metric corresponding to each point of a signal constellation by calculating the Euclidean distance between a received point and a subset of constellation points. Prior to the metric calculations, each received point is translated to the first quadrant and, if necessary, truncated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.