摘要软件无线电具有高度灵活性、开放性,很容易实现与现有和未来多种电台的兼容,能最大限度的满足互联互通的要求。而基于多相滤波器组的信道化软件无线电接收技术以其固有的全概率接收、降采样速率以及其大幅提高运算速率的能力越来越受到重视。本文主要研究了数字信道化接收机中的重要技术多相滤波器。首先介绍了多相滤波器的研究背景和意义及其研究现状,较详细的讨论了软件无线电中的基本理论,主要介绍了信号的抽取和内插技术。然后对数字滤波器进行了深入的研究,对数字滤波器的概念、分类、和设计步骤给出了详细的介绍。通过对数字滤波器的介绍引出了多相滤波器的概念,并且对多相滤波器原理及其结构进行了分析。最后基于 FPGA 开发平台对数字信道化接收机的实现进行了分析。 关键词:软件无线电 数字滤波器 多相滤波器8198
Title The FPGA simulation of polyphase filter
Abstract
Software radio has the characteristic flexibility and openness, the
realization of compatibility with future multiple radio is easy, what is
more it can satisfy the requirement of interconnection to the most extent.
More and more attention is paid to the channelized software radio based
on polyphase filter group for it’s technology of inherent full probability
receive, drop sampling rate and the increase of the rate of operation
ability.This paper mainly studies polyphase filter which is the most
important digital channel technology of receiver.
First, this paper introduced the research background and significance of
the polyphase filter and its research situation. It also introduce the
basic theory of the software radio in detail. Signal extraction and
interpolation technique are talked in major. Then the digital filter is
researched in-depth, the paper also introduce the concepts,
classifications,and design steps of the digital filter in detail. We
receive the concepts of polyphase filter by the introduction of digital
filter. And the principle and structure of polyphase filter is analyzed.
At last the realization of the digital channelized receiver is analyzed
based on the platform of FPGA.
Keyword: software defined radio digital filter polyphase filter
目次
1.绪论 1
1.1 研究背景及意义. 1
1.2 研究现状 . 2
1.3 本课题主要研究的内容 2
2.数字滤波器理论 . 4
2.1 信号采样定理 . 4
2.2 多速率信号处理. 5
2.2.1 信号的抽取 5
2.2.2 信号的内插 8
2.3 数字滤波器 . 9
2.3.1 数字滤波器概述 9
2.3.2 数字滤波器分类 10
2.3.3 数字滤波器的基本结构 . 10
2.3.4 数字滤波器设计步骤 13
2.4 本章小结 . 14
3.多相滤波器原理 . 15
3.1 多相滤波结构 . 15
3.2 多相滤波器的MATLAB 仿真 17
3.2.1 MATLAB 仿真软件 . 17
3.2.2 应用MATLAB 进行FIR 数字滤波器的设计 . 18
3.2.3 多相滤波器的MATLAB 仿真 . 19
4.多相滤波器的FPGA 仿真 21
4.1 FPGA 设计流程 21
4.2 分布式算法 . 23
4.3 FPGA 仿真 25
5.总结 28
致谢 29
参考文献 30
1.绪论
1.1 研究背景及意义
在现代战场中,军用电子设备繁多,接收设备正处于越来越恶劣的电磁环境中,
对侦收机抗干扰性能提出了更高的要求。电子战侦察接收机的一个重要特点是要接收
大量的非合作性信号,通常这些非合作信号还运用了很多防侦收技术。因此侦收机要 多相滤波器组的FPGA仿真+文献综述:http://www.751com.cn/tongxin/lunwen_6437.html