Patent ID: 6826242
Filing Date: 2004-11-30
Classification: H04B,H04L

Abstract:
In a communication network, a method for whitening colored noise present at the input of a receiver, the method comprising:sampling colored noise present at the input of the receiver during a sampling interval to produce a sampled signal; spectrally characterizing the sampled signal across a frequency band of interest to produce a spectral characterization of the sampled signal; modifying the spectral characterization of the sampled signal to produce a modified spectral characterization by: modifying a plurality of spectral components of the spectral characterization by amplifying each of the plurality of spectral components of the spectral characterization by one of a plurality of gain factors, a selected gain factor to be applied to a particular spectral component based upon the magnitude of the spectral component; generating filter settings based upon the modified spectral characterization; and when a signal of interest and colored noise are present at the input of the receiver, filtering the input using the filter settings to whiten the colored noise at the input.