Patent ID: 8514989

Claim:
A receiver for receiving a communication channel modulated on one or more carrier frequencies, said receiver comprising: a gain adjustable radio frequency amplifier coupled to an antenna and adapted to amplify signals within a band of frequencies which band includes the one or more carrier frequencies; a wideband signal power measurement circuit adapted to characterize a total signal strength of signals in a spectral band corresponding with the band of frequencies amplified by said amplifier; an adjustable frequency mixing circuit block adapted to use a first mixing signal to down-convert to baseband the communication channel modulated on one or more carrier frequencies and further, during an interference estimation phase, to use a second mixing signal to down-convert to baseband potentially interfering signal frequencies different from the one or more carrier frequencies; a baseband signal power measurement circuit adapted to measure power of basebands down-converted by said frequency mixing circuit block; and control logic adapted to use outputs of said wideband and said baseband measurement circuits to classify interfering signals based on: (1) a characterization of signal strength performed by said wideband signal measurement circuit, (2) power measurements performed by said baseband signal power measurement circuit, and (3) a spectral proximity of an interfering signal to the one or more channel carrier frequencies, wherein said control logic is further adapted to adjust the gain of said radio frequency amplifier and to adjust the second mixing signal based on the classifications of interfering signals.