Modified gain non-causal channel equalization using feed-forward and feedback compensation
US7206342B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Nov 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0056
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A modified gain system and method are provided for non-causal channel equalization using feed-forward and feedback compensation. The method comprises: receiving a serial data stream first bit (present) input; comparing a second bit (past) value, received prior to the first bit input, to a third bit (future) value received subsequent to the first bit input; modifying the amplitude of the first bit input to compensate for the effect of the second and third bit values being equal; and, determining the value of the first bit input by comparing the amplitude modified first bit input to a Vopt threshold. When only one of the second and third bit values is a “1” value, a unity amplitude modifier is supplied. When the second and third bit values are a “1”, a low amplitude modifier is supplied. When the second and third bit values are a “0”, a high amplitude modifier is supplied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.