毕业设计（论文）--一种新颖的单天线抗干扰频偏半盲均衡器.docVIP

南京邮电大学通达学院 毕 业 设 计（论 文） 题 目： 一种新颖的单天线抗干扰频偏半盲均衡器 专 业： 通信工程 学生姓名： ** 班级学号** 指导教师： ** 指导单位： 通信与信息工程学院 日期： 2009 年 11月 16日 至 2010 年 6 月 11 日 摘 要 目前的无线通信往往是覆盖式的通信,新系统这就产生抗干并提出一种新颖的频偏均衡器。它能保持发解决功率均峰比的问题为接收机用以修复被干扰破坏的信号谱随后利用RLS算法和FROST算法进行自,在SISO-FIR信道和干扰环境下能够半盲,利用频偏滤波(FRESH,循环维纳滤)来进行均衡,利用发射机引入频率偏移来规避干无线半盲均衡循环维纳滤波ABSTRACT The current wireless communication is often the type of coverage communication, new systems often have to work with the existing system at the same frequency band, which raises the question of anti-interference. In this paper, we introduce an easy cyclic smooth modulation scheme, together with a novel frequency offset equalizer. It can maintain a constant signal power and solve the power problem of peak ratio; provide sufficient spectrum redundancy to repair the damaged signal spectrum; resist the interference at the same frequency. This paper is derived for single-antenna channel a kind of batch-style equalizer, and then takes advantage of algorithm RLS and FROST to be conducted adaptive technology. Introducing a single-antenna semi-blind channel equalizer in SISO-FIR channel under interference environment. In the SISO-FIR channel and interference conditions to be semi-blind adaptive equalization .The proposed smooth introduction of semi-blind equalization cycle program which is Based on modulation, using offset filter (FRESH, cyclic Wiener filter) to be balanced, using the transmitter to avoid interference with the introduction of frequency offset. Key words:　single-antenna; wireless; Interferencesemi-blind equalization; cyclic wiener filtering 目 录 第一章 绪 论 1 1.1研究背景及其意义 1 1.1.1传统信道均衡、信道辨识及其缺陷 1 1.1.2盲辨识、盲均衡的提出 3 1.1.3研究意义 5 1.2 信道盲辨识盲均衡的发展历史 7 1.2.1 高阶统计量预备知识 7 1.2.2使用二阶循环统计量的信道盲辨识盲均衡 8 1.2.3使用调制引入二阶循环统计量的信道盲辨识盲均衡 8 1.3 本论文的解决方案简介 9 第二章 理论研究 10 2.1引入频偏与抗干扰频域关系 10 2.2批处理式的半盲均衡器 12 2.3半盲自适应均衡器 14 2.3.1循环半盲FROST算法 14 2.3.2 循环半盲RLS算法 15 2.4可用于信