Receiver having an adaptive filter and method of optimising the filter
US8085838B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2002 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Jan 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/71367
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver comprises an adaptive filter having an input for a digitized input signal, means for storing a pre-designed filter characteristic, means for analyzing a digital representation of the input signal to determine a desired position of the filter characteristic to match the system requirements, and means for adapting the stored pre-designed filter characteristic in the frequency domain and/or the time domain to match the system requirements and for transforming the adapted filter characteristic to the time domain to update coefficients for the adaptive filter and for loading updated coefficients into adaptive filter. The updating of the coefficients may be done periodically. The adaptation may be one or more of adjusting bandwidth, frequency shift and, in the case of a bandpass characteristic, superimposing characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.