Method and apparatus for multi-symbol matched filter estimation of an evaluation symbol in a received signal having a predictable inter-symbol interference
US6347127B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1999 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | May 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/063
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A processing system (216) selects (1004) a portion (702-706) of a received signal including an evaluation symbol (702), along with a preceding symbol (704) received immediately before the evaluation symbol, and a following symbol (706) received immediately after the evaluation symbol; and prefixes (1006) to the portion of the received signal a previously estimated symbol (708) received immediately before the portion, thereby producing an evaluation portion (712, 904). The processing system then compares (1008) the evaluation portion with templates equal in length to the evaluation portion and including different combinations of trial symbols and the at least one previously estimated symbol, prefixed to the trial symbols; and estimates (1010) the evaluation symbol to be equal to a trial symbol in one of the templates having a highest correlation with the evaluation portion, the trial symbol having a position matching that of the evaluation symbol in the evaluation portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.