Method for mitigating intermodulation interference using channel power estimation and attenuation in a two-way radio communications system
US7263363B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2004 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Jan 28, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/362
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for maximizing intermodulation interference protection during a handoff between radio cell sites (300) includes scanning a plurality of radio channels (302) and measuring the signal power (307, 315) for at least one of the radio channels. One or more receiver attenuators (313) are then set based on the detection of intermodulation (IM) interference of the measured channel. The attenuators are then scaled (311) based on the degree of IM interference. If the attenuators cannot mitigate this interference below some predetermined level, the radio channel is changed (321) and the process begins again to ensure a high quality of communication with a cell site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.