Patent ID: 7760820

Claim:
In a receiver of a communication system, a method for reducing noise in a transformed signal, said transformed signal having a plurality of signal components on different subcarriers which are orthogonal to each other, said method comprising the steps of: receiving the transformed signal by a detector of said communication system; processing the plurality of signal components of said received transformed signal by a plurality of decision modules coupled to said detector, wherein said processing step comprises: identifying one or more signal components having one or more smallest channel coefficients based upon a channel estimate of said plurality of signal components; reconstructing a predetermined number of times, by a reconstructing module coupled to outputs of said plurality of decision modules, said identified one or more signal components to thereby reduce noise in said identified one or more components; wherein said reconstructing further comprises an estimated signal from a reconstructed transformed signal at an input of said detector and based upon said channel estimate of said plurality of signal components; and replacing said identified one or more signal components having one or more smallest channel coefficients for reconstruction in said received transformed signal with the reconstructed one or more signal components to provide a new transformed signal having one or more reconstructed signal components with reduced noise; thereby outputting a new transformed signal with reduced noise.