Nonlinear approaches for narrowband interference suppression in DS spread spectrum systems

In this paper. a new nonlinear processing algorithm for the suppression of a narrowband interference in direct sequence spread spectrum systems is int roduced. The proposed algorithm has an advantage in that the unknown interf erence parameters are accurately identified by processing data in a block-b y-block basis via the well established signal subspace techniques. The perf ormance of a receiver that employs such an interference suppression algorit hm is evaluated in terms of the signal-to-noise ratio (SNR) improvement. Co mparisons to the existing nonlinear methods are also presented. (C) 1999 El sevier Science B.V. All rights reserved.