An anti-repeater-jamming approach based on blind source separation for the downlink of satellite communication systems

摘要

In this paper, an anti-jamming approach is proposed for the downlink of satellite communication systems when encountering a hostile repeater-jamming. Based on blind source separation, this approach can eliminate repeater-jamming by separating the mixtures of the communication signals and the repeater-jamming. Meanwhile, oversampling method is employed to transform the underdetermined mixing of signals into a determined mixing for facilitating the separation. In the simulations, the symbol error ratio (SER) of the separated communication signals can approximate the theory SER, and the anti-repeater-jamming capacity can arrive to nearly 28 dB.