修正LMS Newton算法在抑制DSSS窄带干扰中的应用

Application of the Modified LMS Newton Algorithm to the Narrow-band Interference Rejection in the DSSS

论文分析了直接序列扩谱系统(DSSS)中窄带干扰信号的特点。针对LMS算法存在的不足,运用修正LMS Newton算法进行抗窄带干扰处理。与LMS算法相比,修正LMSNewton算法的稳定性和抗干扰性能大大改善,在选取适当的控制参数后,其抗干扰效果更加明显。计算机仿真结果验证了算法的有效性。

The characteristics of the narrow-band interference signal in the DSSS are firstly analyzed. Based on the shortcoming of LMS algorithm, the modified LMS Newton algorithm is used to deal with narrow-band interference. Compared with LMS algorithm, the stability and anti-jam performance of the modified LMS Newton algorithm are improved greatly. The interference rejection performance would be better if the appropriate control parameters were selected. Computer simulations show its effectiveness.