Self-adapting filter

Details Self-adapting filter Self-adapting filter

1993-12-15

1995-07-11

Envall, Jr., Roy N.

Boots, shoes, and leggings

36472417, 36472413, 375232, 375235, G06F 1531, H03H 730, H03H 740

Patent

active

054327253

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.

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patent: 4980849 (1990-12-01), Baseghi
patent: 5005185 (1991-04-01), Mizoguchi et al.
patent: 5130943 (1992-07-01), Gazsi et al.
patent: 5353307 (1994-10-01), Lester et al.

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