一种改进的DSSS系统自适应干扰抑制技术  

A Modified Adaptive Interference Suppressing Technology for DSSS System

作　　者：张伟[1] 周力[1] 

机构地区：[1]解放军镇江船艇学院,江苏镇江212003

出　　处：《微电子学与计算机》2009年第12期75-77,共3页Microelectronics & Computer

基　　金：国家自然科学基金项目(60472051)

摘　　要：直接序列扩频(DSSS)技术是一种有效的抗干扰通信体制,在军事通信中一直备受重视.当干扰能量很强时,必须寻找另外的一些辅助的技术措施,增强其抗干扰能力,自适应干扰抑制技术就是很好的选择.但是,时域的自适应算法复杂度过高,很难适时处理系统中的窄带干扰.对普通LMS算法的加以改进,大大提高了算法的效率,仿真结果表明改进后的算法具有相当好的干扰抑制性能.technology is an efficient anti-interference communication system, which plays an important part in military communications. However, we need to search for technical measures to enhance the anti-interference ability of DSSS system when the power of interference is large. Adaptive interference suppressing technology is a good option, but the complexity of the algorithm is unacceptable. In this paper, traditional LMS algorithm is modified to decrease the computation load. The simulation result shows the m lified algorithm improves the performance of the DSSS system.

关 键 词：直接序列扩频 LMS 干扰抑制 

分 类 号：TN927[电子电信—通信与信息系统]