Patent ID: 8363761

Claim:
A wireless modem for providing noise cancellation, said wireless modem comprising: a primary antenna for receiving a radio signal and a first noise signal coming from a particular device to which the wireless modem is connected for communication therewith; a secondary antenna for receiving a second noise signal from the connected device; a noise signal adjuster unit for adjusting the second noise signal received by the secondary antenna, said noise signal adjuster unit utilizing a particular correlation parameter associated with the first and second noise signals received by the primary antenna and the secondary antenna; and a noise remover subtracting the second noise signal adjusted by the noise signal adjuster unit from the radio signal received by the primary antenna; wherein the noise signal adjuster comprises: a Fast Fourier Transform (FFT) block transforming unit for transforming a time domain radio signal and a time domain noise signal respectively into a frequency domain radio signal and a frequency domain noise signal; a correlation parameter producer for producing a correlation parameter by comparing the radio signal received by the primary antenna with the second noise signal received by the secondary antenna; a noise calibration controller for adjusting the second noise signal received by the secondary antenna using the produced correlation parameter; and an Inverse Fast Fourier Transform (IFFT) block transforming unit for transforming a frequency domain radio signal and a frequency domain noise signal respectively into a time domain radio signal and a time domain noise signal.