Reducing interference in a GSM communication system
US7187736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2003 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Jul 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03414
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for reducing interference in a desired signal in a GSM communication system uses a finite-impulse-response filter for alternate linear equalization. The method includes a first step (300) of inputting a burst of data of a received waveform including interference from a channel of the communication system. A next step (302) includes training the finite-impulse-response filter with a set of symbols of specific quadrature phase, known a priori, in the burst of data of the received waveform. For example known real only and imaginary only symbols are alternatively selected from a midamble of the data burst. A next step (304) includes operating on the received waveform with the finite-impulse-response filter to alternately linearly equalize the burst of data to provide an estimate of the desired signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.