Accession Number : ADD018081

Title :   Non-Adaptive Amplitude-Difference Interference Filter.

Descriptive Note : Patent, Filed 11 Jun 91, patented 16 Apr 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bond, James W

Report Date : 16 Apr 1996

Pagination or Media Count : 14

Abstract : An interference suppression system utilizes a non-adaptive filter to suppress 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 deg 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.

Descriptors :   *FILTERS, *RADIO INTERFERENCE, *SUPPRESSION, *PATENTS, ENVIRONMENTS, VARIABLES, SIGNALS, INTERFERENCE, COMMUNICATION AND RADIO SYSTEMS, MEAN, RECEPTION, AMPLITUDE, CANCELLATION

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE