Apparatus for frequency and timing recovery in a communication device
US6993673B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | May 24, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03617
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Apparatus for recovering timing of data input to a receiver, the apparatus consisting of an interpolator which receives the input data and generates interpolated-data in response to an interpolation coefficient, and a feed-forward equalizer having at least three taps. Each tap consists of a multiplier which is coupled to multiply a respective input sample by a respective adaptive equalization coefficient. The taps are arranged in sequence so that the input sample to each of the taps, except to a first tap in the sequence, is delayed relative to a preceding tap in the sequence. The equalizer receives and equalizes the interpolated-data so as to generate equalized-data from the interpolated-data. The apparatus also includes a timing sensor which adjusts the interpolation coefficient responsive a third adaptive equalization coefficient comprised in the equalization coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.