Adaptive equalizer operating at a sampling rate asynchronous to the data rate
US7248630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2002 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Mar 28, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/0363
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to an LMS-based asynchronous receiver for digital transmission and recording systems. The receiver comprises a digital adaptive equalizer (EQ) for receiving a received sequence rn and for delivering an equalized sequence yn. The equalizer (EQ) operates at the sampling rate 1/Ts, asynchronous to the data rate 1/T. An equalizer adaptation method using LMS techniques is described for adapting equalizer taps asynchronously to the data rate via a control loop. A first sampling rate converter (SRC1) performs timing recovery at the data rate 1/T after equalization on the equalized sequence yn. A second sampling rate converter (SRC2) is provided for converting a delayed version of the received sequence rn into an intermediate control sequence ik at the data rate 1/T.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.