Abstract:

This paper presents a suppression method for the interference characterized by constant amplitude and ploynomial phase signal (PPS) based on high-order instantaneous moment iterative approach in directsequence spread spectrum communication. The phase parameters of ploynomial phase interference are accurately estimated based on highorder instantaneous moment and iterative approach, and the interference amplitudes is estimated by least-square algorithm, then the interference from received signals is synthesized by estimated parameters. The interference contribution can be removed by subtracting synthesized interference from received signals in time domain. Simulation results show that the performance of interference suppression is greatly improved.