Comparison of matched filter acquisition using beamforming and CME algorithm in impulsive interference

This paper introduces a receiver structure which can be used to aid code acquisition in direct sequence spread spectrum systems when there are undesired impulsive interferences in the communication channel. Impulses can be suppressed using the consecutive mean excision (CME) algorithm in the time domain. Additional gain against interference is obtained using beamforming prior the code acquisition. Performance comparisons to receivers without the CME algorithm are executed in environments where the direction-of-arrival of impulses is either random or fixed. It is shown that the CME algorithm improves the performance in most of the cases.