Patent ID: 7428281
Filing Date: 2008-09-23
Classification: H04L

Abstract:
1. A method of removing a discrete spurious signal, the method comprising the steps of: processing a digitally modulated signal of interest, together with a spurious signal such that any inter-symbol interference is substantially eliminated, leaving only the signal of interest impaired by the spurious signal and some white noise; processing the signal of interest impaired by the spurious signal and some white noise to generate a decision error comprising the spurious signal and the white noise; regenerating the spurious signal in response to the decision error such that the regenerated spurious signal frequency matches the actual spurious signal frequency; frequency shifting the digitally modulated signal of interest along with the spurious signal in response to the regenerated spurious signal; filtering out the frequency shifted spurious signal; and frequency shifting the digitally modulated signal of interest back to its original frequency.