一种改进的自适应滤波器的原理与FPGA实现

Principle of an Improved Adaptive Filter and Its FPGA Realization

为了克服传统自适应滤波的缺点 ,提出了一种改进的自适应滤波器 ,阐述了该滤波器抑制窄带干扰的基本原理 ,用Altera公司的仿真软件QUARTUSⅡ 3.0和STRATIX系列EP1S2 5F6 72C7芯片来实现该滤波器的现场可编程门阵列 (FPGA)设计 。

To overcome the drawback of the traditional adaptive filter, a kind of improved adaptive filter is suggested. The basic principle of suppressing the narrowband interference is explained, and the FPGA design of the filter using QUARTUSⅡ3.0 and the CMOS chip of EP1S25F672C7 is accomplished. The test method and results are also given.