Method for processing a digital input signal of a channel equalizer
US7257174B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2001 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Aug 17, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A baseband digital signal block is processed at an output of a matched filter and at an input of a channel equalizer. This signal is fed to a whitening filter estimated for the block by taking into account interfering signals in the frequency band of the useful signal and in one or more adjacent bands. To this end, an autocorrelation vector, calculated form the block of received signal is projected onto different directions corresponding to predetermined correlation vectors relating to the useful signal, to signals which may be present in the adjacent bands and to the thermal noise. The coefficients of the whitening filter are then derived from the sum of the projected vectors, by taking into account the energy of the useful signal if the latter has not been cancelled prior to the computation of the autocorrelations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.