Patent ID: 7742386

Claim:
A method performed at each transceiver for reducing interference in an incoming signal received at a transceiver of a communication device using four channels to communicate data between a first transceiver and a second transceiver comprising: receiving, in a serial format, a signal to be transmitted over a channel, the transmitted signal to be transmitted from the transceiver on one of the four channels, all of which terminate at a single transceiver; converting the signal to a parallel format; performing overlap processing on the signal; performing a Fourier transform on the signal to create a transform domain signal wherein only one Fourier transform per channel occurs to create the transform domain signal; distributing the transform domain signal to two or more multipliers, at least one of which is associated with a different channel; multiplying the transform domain signal by one or more weighting variables to create a weighted transform domain signal; performing an inverse Fourier transform on the weighted transform domain signal to create a cancellation signal wherein only one inverse Fourier transform per channel occurs to create the cancellation signal; performing overlap processing on the cancellation signal; converting the cancellation signal to a serial format; and combining the cancellation signal with the incoming signal to reduce interference in the incoming signal.