Decision feedback equalizer including forward part whose signal reference point is shiftable depending on channel response
US5119401A · kind A · utility
126Cited by
5References
8Claims
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Assignee
Inventor
Key dates
| Filing date | Nov 19, 1990 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Nov 19, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/0349
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A center tap of a transversal filter, which forms part of a forward equalizer, is shifted by at least one symbol interval. An error signal is generated using a decision output and tap outputs of the forward and backward equalizers. An impulse response estimation circuit is provided to receive the decision output of the predetermined tap signals of the forward equalizer. The forward equalizer is controlled in accordance with the channel response to effectively achieve adaptive equalization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.