Patent ID: 8090320

Claim:
A receiver circuit, comprising: a downconverter unit configured to downconvert a received radio frequency signal, comprising a desired signal and one or more interfering signals, to a processing frequency, to obtain a processing frequency signal; a distortion waveform generator configured to generate an estimated distortion waveform from the one or more interfering signals, the estimated distortion waveform comprising one or more intermodulation products of the interfering signals; first and second filters configured to filter the processing frequency signal and the estimated distortion waveform, respectively; first and second sampling units configured to sample the filtered processing frequency signal and the filtered estimated distortion waveform to obtain a sampled signal of interest and a sampled distortion signal, respectively; first and second transform units to divide the sampled signal of interest and the sampled distortion signal, respectively, into a plurality of frequency channels; and an interference subtracting unit configured to combine the sampled distortion signal for each of a selected number of frequency channels with the corresponding sampled signal of interest for each of the same frequency channels to obtain interference-reduced signal samples for each of the selected number of frequency channels.