基于VHDL的自适应滤波器的设计与实现

Design and Implementation of Adaptive Filter Based on VHDL

通过VHDL语言对最小均方算法(LMS)进行数学建模设计,然后嵌入到有限长脉冲响应(FIR)滤波器上,在Quartus Ⅱ上实现了自适应滤波器的设计,然后采用LMS算法的自适应FIR滤波器进行Matlab的仿真验证,并在Altera公司的EP3C55F484C6上进行功能验证,对比验证结果表明该自适应滤波满足滤波功能,能够很好地消除噪声。

The Least Mean Square( LMS) algorithm was modeling-designed through VHDL language,Then it was embedded into the finite impulse response( FIR) filter. The design of the adaptive filter was implemented in the Quartus Ⅱ. Then the adaptive FIR filter with LMS algorithms was verified for Matlab simulation. Meanwhile,function verification was carried out on the EP3 C55 F484 C6 by Altera company. Through comparison and verification,it was concluded that the adaptive filter could function properly and could eliminate noise effectively.