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:

1991-02-05

Pagination or Media Count:

25.0

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