Narrow-band Interference Suppression in DSSS Systems Using Efficient Adaptive Filters

In this paper, we present a novel adaptive interference suppression method by combining with time-domain filters and frequency-domain filters. Demonstrated by simulation results, the method can significantly improve the performance of DSSS receiver serving at the narrow-band interference environment. The improvement of resulting SNR after NBI suppression will further enhance along with the increasing of interference intensities. Compared with the simple interference nulling and amplitude limiting processing, the proposed method has less complexity and better real-time performance without losing much signal performance.