This paper proposes using Independent Component Analysis (ICA) as an advanced pre-processing tool for blind suppression of interfering jammer signals in direct sequence spread spectrum communication systems utilizing antenna arrays. The role of ICA is to provide a jammer-mitigated signal to the conventional detection. If the jammer signal is weak or absent, preprocessing by ICA is not advisable. Therefore two possible switching schemes, called pre-switching and post-switching are also considered, which activate the ICA-based jammer canceller only when it is expected to improve conventional detection.
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