摘要
对改进的NLMS自适应滤波器算法与传统的LMS算法进行了较全面的性能比较,利用Matlab程序分别仿真分析了两种算法的误差、收敛速度和稳定性等特性。在改进的NLMS算的基础上给出了自适应滤波器的原理结构,并仿真了其在去除噪声信号中的应用。分析结果表明:改进的NLMS自适应滤波器算法相对于传统的LMS自适应滤波器算法在减小误差方面优势明显。以上NLMS自适应滤波器特性分析结果对于智能天线设计具有指导意义。
This paper makes a comparison between common LMS and NLMS. It analyzes their error,convergence speed and stability of different algorithms with Matlab program. The structure of the Adaptive Filter based on the NLMS and the simulation of its application in the removal of noise signal are given. The results show that improved NLMS algorithm can significantly help the Smart Antenna receive signals with less error. The analysis of the NLMS Adaptive Filter is useful to the design of Smart Antenna.
出处
《计算机系统应用》
2010年第4期46-48,36,共4页
Computer Systems & Applications
基金
辽宁省教育厅基金(2004D028)
关键词
自适应滤波器
结构
仿真
信号处理
adaptive filter
structure
simulation
signal processing
