基于FPGA和符号LMS算法的自适应滤波器设计

摘要

为了减少实现基于FPGA和LMS算法的自适应滤波器过多消耗硬件资源的问题，提出了符号LMS算法，通过降低乘法运算的次数来提高自适应滤波器的运行速度，并使用流水线技术进行优化。软件仿真验证了符号LMS算法的可行性，硬件仿真证实了采用该算法和流水线技术的自适应滤波器的优越性。%To decrease the consumption of hardware resource of adaptive filter based on FPGA and LMS algorithm, signum-LMS algorithm is proposed. The processing speed of adaptive filter is increased by reducing the number of multiplications and optimized by pipelining technology. Software simulation verifies the feasibility of signum-LMS al-gorithm. Hardware simulation proves the superiorities of the adaptive filter using the proposed algorithm and pipelining technology.