小波包变换域自适应干扰抑制技术在直序扩频通信系统中的应用  

Application in DS-CDMA System of Adaptive Interference Suppression Technique in Wavelet-Packet Domain

作　　者：王荣[1] 颜永庆[1] 周猛[1] 程时昕[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《电路与系统学报》2002年第1期104-107,共4页Journal of Circuits and Systems

摘　　要：具体研究用离散小波包变换实现输入信号的子带分解,采用LMS算法自适应地调整滤波器抽头系数,有效地抑制窄带干扰。分析和仿真结果表明:基于TSA算法的小波包分解自适应窄带干扰抑制的方法比子带剔除在性能上更为优越,自适应算法的收敛速度也有较大的改善。The sub-band decompositon of received signal is realized by discrete wavelet-packet transformation, and filter coefficients are adaptively adjusted by LMS algorithm, which suppress narrow-band interference efficiently. Analyzed and simulated results show that the interference suppression method of adaptive wavelet-packet decomposition based on TSA algorithm will obtain better performance than that of conventional sub-band elimination. Additionally, the convergence speed of adaptive algorithm can get great improvement.

关 键 词：直序扩频通信系统 小波包变换 自适应干扰抑制 

分 类 号：TN914.42[电子电信—通信与信息系统]