摘要
单音干扰是WiMAX通信系统中的一种常见干扰,在基带处理前引入单音干扰算法能有效抑制单音干扰,提高系统性能。本文提出了一种基于Notch滤波器的抑制固定单音干扰算法及其FPGA逻辑实现方法。文中首先阐述了设计思想,然后讨论Notch滤波器原理及设计方法,最后给出该算法在FPGA中的实现及滤波效果评估。评估测试结果表明该算法不仅可以有效抑制WiMAX通信系统的单音干扰而且易于FPGA逻辑实现。
The single tone interference is a common disturbance happened in WiMAX communication.Introduction of the interference rejection algorithm before the baseband processing can effectively suppress the single tone interference,improve the system’s performance.This article has proposed a kind of method which is based on the Notch filter to suppress the fixed tone interference algorithm and its realization of the FPGA logic.This paper firstly elaborates the designing idea,and then discusses the principle of Notch filter and the designing steps,finally demonstrates how the idea is realized in FPGA and the evaluation of the filtering result.Evaluation result shows that,the algorithm can not only effectively suppress the WiMAX communication system of single tone jamming,but also can help the FPGA logic to be implemented.
出处
《中国科技信息》
2012年第1期82-83,共2页
China Science and Technology Information
