Patent ID: 8098782

Claim:
A communications device comprising: pre-processing circuitry operable for processing a received wideband complex signal including an undesired narrowband interference component therein, and for determining a frequency of the undesired narrowband interference component; a filter downstream from said pre-processing circuitry and operable to generate a received wideband complex signal with at least one frequency notch therein to suppress the undesired narrowband interference component, said filter comprising a finite impulse response (FIR) filter comprising L taps to generate N output values, with L>N, a Fast Fourier Transform (FFT) block downstream from said FIR filter and having a length N so that filter transition regions occur between frequency bins of said FFT block, a notching block downstream from said FFT block and operable to generate at least one frequency notch, and an Inverse Fast Fourier Transform (IFFT) block downstream from said notching block and having the length N; and a demodulator downstream from said filter.