Non-adaptive amplitude-difference interference filter

Details Non-adaptive amplitude-difference interference filter Non-adaptive amplitude-difference interference filter

1991-06-11

1996-04-16

Cain, David C.

Pulse or digital communications

Systems using alternating or pulsating current

Antinoise or distortion

455 63, H04B 1500

Patent

active

055090320

ABSTRACT:
An interference suppression system utilizes a non-adaptive filter to supps interference from bandspread communication signals. The filter is effective in the cancellation of interference from a bandspread communication signal whenever interference has a mean component several times greater than its variable component. By forming amplitude-differences, the filter is used to estimate whether the signed magnitude of a communication signal component is in-phase or 180.degree. out-of-phase with present interference. By estimating this component, high quality reception of spread spectrum radio communication signals in an interference environment is possible.

REFERENCES:
patent: 3157874 (1964-11-01), Altar et al.
patent: 3189901 (1965-06-01), Cutolo

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