Method and apparatus for dynamic filter selection in radio receivers
US6970685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2003 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | May 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for processing a radio signal which may include a narrowband signal or a wideband signal or both, comprises the steps of receiving the radio signal, initially processing the radio signal using a narrowband filter, switching to a wideband filter for further processing of the radio signal, determining if the wideband signal is acquired, and if the wideband signal is not acquired, alternating between narrowband filter processing for a narrowband filter hold time and wideband filter processing for a wideband filter hold time, where the narrowband filter hold time is gradually increased until a predetermined maximum time limit is reached. If the wideband signal is acquired, the narrowband filter hold time can be set to a predetermined minimum time limit. Receivers which implement the method are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.