Self-adapting filter
US5432725A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1993 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Dec 15, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H21/0012
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The Self-Adapting Filter is an adaptive interference suppression device t can be used to extract bandspread communication signals from a received signal containing significant structured interference. The filter processes signal quantities consisting of inphase and quadrature (real and imaginary) components of received signal baseband samples. Process weights are calculated directly from the symmetric differences of the signal samples. Calculating the statistics of the samples is not necessary, nor is the calculation and use of signal sample magnitude and phase. By processing components of the received signal baseband samples directly, a simple implementation of an approximate locally optimum processing algorithm is possible enabling simple filter hardware and operation. All processing can be pipelined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.