Adaptive digital filter having non-recursive and recursive filter elements
US5014232A · kind A · utility
50Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1989 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Apr 7, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/237
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An adaptive digital filter including a non-recursive part and a recursive part, and which can be updated in a simple and reliable manner. The recursive part of the filter has a plurality of separate, permanently set recursive filters (13-16) with different impulse responses, and a linear combination is formed with adaptive weighting factors (W0-W3) from the output signals of the recursive filters (13-16). The filter is updated by a single (e(n)) being utilized for updating the non-recursive part (11) of the filter and the adaptive weighting factors (W0-W3) in the recursive part of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.