Apparatus and method for equalizing for amplitude jitter
US5434884A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1994 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Oct 4, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3872
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A modem (100) includes an equalizer for equalizing a received signal (10) for amplitude jitter distortion. The received signal includes modulated symbols based on a predetermined constellation of points, each point representing a symbol. The modem first extracts a modulated symbol to provide an extracted symbol, R(k), which includes amplitude jitter distortion. The modem then identifies a signal point P.sub.n (k) of the predetermined constellation corresponding to the extracted symbol. Further, the modem determines an error signal (76) based on the amplitude jitter distortion, and then uses the error signal to compensate subsequent extracted symbols for the amplitude jitter distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.