Apparatus for and method of reducing interference in a communications receiver
US6470047B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Apr 5, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03503
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A novel and useful apparatus for and method of interference reduction in a communications receiver. The invention first finds the channel estimate and the noise vector from the receive signal. An interference detector is then used to choose an appropriate compensation filter and select between adaptive and deterministic moving average models for noise prediction. After compensation filtering, a new channel estimate and noise vector is calculated. The new noise vector is used to determine noise whitening coefficients if the adaptive model is used. In the deterministic model case, the coefficients do not need to be calculated since they are already known, having been calculated a priori. The noise whitening coefficients are then used in an equalizer such as a Viterbi algorithm based equalizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.