基于DSP Builder的回波抵消器设计与实现

Design and Implementation of Adaptive Echo Cancellation Based on the DSP Builder

针对通信中的回波问题,基于自适应滤波的LMS算法,设计了自适应回波抵消器。并基于利用FPGA芯片,在DSP Builder平台上,有效结合MatLab/Simulink和Quartus II设计工具,根据模块化设计思想实现了LMS算法自适应回波抵消器硬件电路设计。软件仿真和系统FPGA硬件实测结果表明,该设计方法使回波抵消器的FPGA硬件实现更加简便快捷。

Aiming at the echo problem in communication,this paper presents a algorithm of LMS based on adaptive echo cancellation using DSP Builder Tool,which combines Matlab/Simulink with Quartus II designing tools on FPGA chips,with the concepts of modularization.The software simulation and hardware verification on FPGA indicate that the design is simpler and faster to implement the adaptive echo cancellation.