关键词: 复数自适应陷波器, 窄带干扰, 迭代算法

Abstract:

This paper researches the different amplitude narrowband interference suppression in direct sequence spread spectrum communication system and introduces a cascade structure of the notch filter with one-order complex adaptive notch filter as notch cell,and makes a theoretical analysis of the adaptive algorithm for coefficient iteration.Simulation results show that the notch filter can effectively eliminate multiple narrowband interferences,and the corresponding iterative algorithm has good convergence performance.

Key words: complex adaptive notch filter;narrowband interference;iterative algorithm