论文总字数：22091字

摘 要

Abstract 1

一.绪论 2

1.1现代通信的发展历史 2

1.2高速通信的产生和发展 3

1.3 高速通信中遇到的问题 3

1.4 本论文研究内容及安排 4

二.信道和均衡 4

2.1信道 4

2.1.1 信道介绍 4

2.2.2 通信信道模型 5

2.2自适应均衡 6

2.3均衡器的种类 6

2.4线性横向均衡器 7

2.5自适应算法 9

2.5.1自适应算法理论 9

2.5.2最小均方算法 10

2.6 本章小结 13

三.部分响应和系统仿真 14

3.1 部分响应原理 14

3.2部分响应系统的码间干扰 16

3.3部分响应系统分类与编码 16

3.4 matlab系统仿真 18

3.4.1 matlab简介 18

3.4.2 系统设计流程 19

3.4.3 信号输入及编码 20

3.4.4 信道及均衡 21

3.4.5 眼图 27

3.5 本章小结 30

四. Hspice电路仿真设计 31

4.1 Hspice简介 31

4.2电路设计（0.18μmCMOS工艺） 32

4.2.1电路总布局设计 32

4.2.2延时单元设计： 32

4.2.3加法器设计： 34

4.2.4抗PVT变化设计 34

4.3本章小结 35

五.总结 35

致谢 36

参考文献 37

摘要

随着人们的需求的不断提高，通信业也需要能够使传输更快和更方便的通信方式。而使高速通信信号可用带宽变得更宽，也就意味着更高的信道容量，并且还能减少或避免信号不同通道间的干扰。另外高频信号辐射和接受效果一般都要比低频信号好，由于只有在天线尺寸可以与信号波长相比拟时，才会具有高的辐射效率及接收效率，因此可以使用较小的信号功率传播更远的距离，也获得较高的接收灵敏度。

但与此同时高速通信中的频率损耗、趋肤效应以及介质干扰等导致了数据传输时的非理想特性，造成了脉冲的拓展，形成了码间干扰(Inter-symbol Interference，ISI)。码间干扰会增大误码率，导致眼图的闭合，是提高传输速率的一个重要制约因素。

为了实现可靠通信，均衡技术经常被用来补偿基于频率的信道损耗。然而，随着数据速率的增加，信号经过带宽受限信道时的衰减也越来越大，传统NRZ码传输方式难以实现高速传输，有必要研究有效的传输方式，例如通过压缩信号带宽来减小信号衰减，提高信号完整性。因此，本研究重点研究基于部分响应信号的均衡技术，包括部分响应信号的种类，相应的均衡技术，及电路实现技术等。

关键词：高速通信，部分响应，均衡，信道

Abstract

With the improvement of people's needs, the communications industry also needs to be able to make transmission faster and more convenient means of communication. Leaving the high-speed communication signals available bandwidth becomes wider, which means a higher channel capacity, and also to reduce or avoid signal interference between channels. Also receiving high-frequency signal radiation and the general effect is better than the low-frequency signal, because only when the antenna size can be compared with the wavelength of the signal intended, will have a high radiation efficiency and reception efficiency, so you can use a smaller signal power spread more distances, but also to obtain higher receiver sensitivity.

At the same time the high-speed communication frequency loss, skin effect and dielectric interference led to the non-ideal characteristics of data transmission, resulting in the expansion of the pulse, the formation of the ISI . ISI error rate will increase, leading to eye closure, it is a major constraint to improve the transmission rate.

In order to achieve reliable communication, equalization techniques are often used to compensate for the loss based on the channel frequency. However, as data rates increase, signal attenuation through the band-limited channel is also growing, traditional NRZ transmission code is difficult to achieve high-speed transmission, it is necessary to study effective ways of transmission, for example, be reduced by compressing the signal bandwidth attenuation and improving signal integrity. Therefore, this study focus based on partial response equalization signal, including the type of partial response signals corresponding equalization techniques and circuit implementation technology.

Keywords: high-speed communications, partial response equalization,channel

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