Patent ID: 8098720

Claim:
A method, comprising: suppressing multipath propagation in a modulated digital signal, said suppressing including: providing a first value of channel angular frequency, representative of said modulated digital signal free of multipath propagation; providing a second value of said channel angular frequency, representative of said modulated digital signal with multipath propagation; and detecting the multipath propagation in said modulated digital signal by comparing said first value with said second value; wherein providing said second value includes: obtaining a derivative signal representative of the derivative of said modulated digital signal by processing said modulated digital signal; generating a first signal representative of the energy of said modulated digital signal by applying a non-linear Teager-Kaiser function to said modulated digital signal; generating a second signal representative of the energy of said derivative signal by applying said non-linear Teager-Kaiser function to said derivative signal; and generating said second value by processing said first signal and said second signal; and said comparing includes calculating a ratio between said second value and said first value, said ratio identifying a parameter able to detect multipath propagation in said modulated digital signal if said calculated ratio is less than 1.