Blind source separation in noisy environment and applications in satellite communication anti-jamming

Aiming at the problem of satellite communication signal and jamming blind separation in noisy environment, a new method is presented which combined joint approximate diagonalization (JAD) of the fourth order cumulant matrix and post-position wavelet de-noising. The new method has solved the problem that the performance of previous ones become worse at jamming-to-signal-ratio (JSR) exceeded 30 dB when they are used for satellite communication anti-jamming. Bit error ratio (BER) performance simulations are used to provide quantitative evaluations of the efficiency of the method.