Method and apparatus for suppressing communication signal interference
US7711035B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Jul 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A frequency domain representation of a whitening filter is made to depend on essentially one unknown, namely, a scaling factor that is based on an estimated ratio of total base station power to the power spectral density (PSD) of inter-cell interference plus noise. In turn, that scaling factor can be computed based on the modeling terms used in a parametric model of the impairment correlations for a received communication signal. Preferably, the model comprises an interference impairment term scaled by a first model fitting parameter, and a noise impairment term scaled by a second model fitting parameter. Further, the scaling factor can be computed by directly estimating total base station transmit power and the PSD of inter-cell interference plus noise. In any case, the whitening filter can be used in whitening a received communication signal in conjunction with channel equalization processing or RAKE receiver processing, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.