Co-channel interference suppression and signal separation method

A method for interference suppression and signal separation of angle modulated signals is presented. The method is particularly useful for cochannel interference suppression. The main idea is to use the amplitude variation of the composite signal (the strong plus weak signals) to estimate the parasitic phase distortion incurred by the interferer. The authors utilize this estimate to cancel out the distortion at the composite signal and obtain (strong) signal's angle information. The weak signal is then obtained by suitable subtraction from the composite signal after limiting.<>