Dynamic filtering of pilot energy samples in a wireless communication system
US6539069B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1997 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Jun 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/70754
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for dynamically varying the response of a digital filter in a pilot signal detection circuit in response to the number of pilots that are scheduled to be searched. The apparatus comprises a searcher subsystem for generating a pilot energy sample. The pilot energy sample is then digitally filtered in a filter whose coefficients are determined in response to the number of pilots that are scheduled to be searched. A control processor determines the number of pilot signals to be searched, and calculates a filter length in response to the number of pilot signals to be searched. Furthermore, the control processor filters the pilot energy sample according to filter coefficients which are based on the calculated filter length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.