Soft decision estimation unit and maximum-likelihood sequence estimation unit
US6302576A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1995 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Jul 28, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/23
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A metric calculating means calculates a first metric corresponding to a transmitted symbol sequence estimated by an adaptive equalizer, then calculates a second metric corresponding to a symbol sequence in which a symbol located at a position where a soft decision is made in the transmitted symbol sequence is inverted in polarity. Thereafter a subtracting portion subtracts the second metric from the first metric. Further, a multiplying portion multiplies the subtraction result from the subtracting portion by the symbol located at a position where the soft decision is made in the transmitted symbol sequence to generate a soft decision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.