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We propose to apply blind source separation techniques for jammer mitigation in spread spectrum (SS) communication systems. These techniques strive to separate the jammer from the signal and as such produce a signal with reduced jammer contamination. With the jammer mostly mitigated through the separation process, the SS system requires smaller spreading gain and transmission bandwidth than the case if no separation is performed. The proposed spread spectrum receiver based on source separation improves the SNR at the correlator output and its performance is robust to multipath and coherent jamming environments. Simulation results including the bit error rates are provided to illustrate the effectiveness of the proposed approach.