自适应有限冲激响应滤波器的FPGA实现

对于传统的固定系数滤波器,分布式算法可以利用查找表有效提高其运行速度;但是对于自适应滤波器,其系数是不断调整的,不可以直接应用分布式算法。依据分布式算法设计了一种适用于自适应滤波器的现场可编程门阵列（FPGA）实现方法,并在Xilinx公司提供的ISE软件平台上应用Verilog硬件设计语言（HDL）进行编程,利用Modelsim和Matlab软件进行了仿真。仿真结果基本一致,验证了自适应有限冲激响应滤波器的FPGA实现方法是可行的。

Realization of Adaptive Finite Impulse Response Filter Based on FPGA

For traditional filter with fixed coefficients,the distributed algorithm can effectively improve the processing speed of the filter by means of look-up table;however,for the adaptive filter,because the coefficients are continuously adjusted,so the distributed algorithm can＇t be applied directly to this kind of filter.According to the distributed algorithm,this paper designs a realization method based on field-programmable gate array（FPGA）,which is suitable for the adaptive filter,and implements the programming through Verilog hardware design language（HDL） on ISE software platform provided by the Xilinx Company,simulates it by using the Modelsim and Matlab software.The simulation results are basically consistent,validate that the FPGA realization method of adaptive finite impulase response filter is feasible.