Accession Number : ADD014851

Title :   Digital Adaptive Interference Canceller.

Descriptive Note : Patent, Filed 28 Sep 88, patented 5 Feb 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Cronyn, Willard M

Report Date : 05 Feb 1991

Pagination or Media Count : 25

Abstract : An interference canceller for cancelling an interfering signal generated by an interfering source from a transmission link between an antenna and a receiver. The interference canceller derives a sample of the interfering signal from the interfering source and down converts the sample to an intermediate frequency. A computer controlled delay path and computer controlled amplitude and phase modulator interactively adjusts a cancellation signal that is injected into the transmission link between the antenna and receiver to maximize the amplitude match between the cancellation signal and the interfering signal, and anti-phase the cancellation signal with respect to the interfering signal.

Descriptors :   ADAPTIVE SYSTEMS, AMPLITUDE, CANCELLATION, COMPUTERS, CONTROL, DELAY, DIGITAL SYSTEMS, INTERFERENCE, INTERMEDIATE FREQUENCIES, MODULATORS, NOISE, PATHS, PHASE MODULATION, SIGNALS

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE