2DPSK 调制解调仿真系统设计.doc

论文题目:2DPSK调制解调仿真系统设计
专业:通信技术学号: 0807040211
学生:苏瑜签名:_____
指导教师:张鸣签名:_____
摘要
二进制差分相移键控简称二相相对调相,记作2DPSK。它是数据通信中最常用的一种调制方式,这种方式的优点是简单,易于实现。与2PSK的波形不同,2DPSK波形的同一相位并不对应相同的数字信息符号,而前后码元的相对相位才唯一确定信息符号。为了使数字信号在带通信道中传输,必须用数字基带信号对载波进行调制,以使信号与信道特性相匹配。调制解调技术是实现现代通信的重要手段,研究数字通信调制解调理论,提供有效的调制方式,有着重要意义。Matlab中的通信工具箱可以用来进行通信领域的研究、开发、系统设计和仿真。
本文主要研究了利用Matlab Simulink软件对2DPSK调制解调系统的设计。首先介绍了2DPSK调制解调的基本原理和Matlab Simulink仿真软件。然后根据2DPSK的调制原理及解调原理进行了仿真模型搭建,并分析了仿真结果。最后利用Matlab Simulink中的DBPSK Modulator Baseband和DBPSK Demodulator Baseband模块实现了2DPSK调制解调系统设计。
【关键词】 Matlab Simulink 2DPSK 调制解调
【论文类型】设计型
Title: 2DPSK of Modulation and Demodulation Simulation System Design
Major: Communication Technology Number: 0807040211 Name:Su Yu Signature:
Supervisor:Zhang Ming Signature:
ABSTRACT
Binary differential phase shift keying modulation is relatively short two-phase, denoted by 2DPSK. It is one of the monly used modulation in munications, this approach has the advantage of simple, easy to implement. 2DPSK waveform is different from 2PSK waveform. 2DPSK waveform does not correspond to the same phase of the same number of information symbols, and the relative phase of the before and after symbol determine the only information symbols. In order to make the digital signal transmitted in munication channel,we must use digital baseband signal to modulate the carriert, which can make the signal match the channel characteristics. Modulation and demodulation technology is an important means to achieve munications, modulation and demodulation of munications theory,and it can provide an effective way of great significance. Matlab toolbox munication in the field munications can be used for research, development, system design and simulation
This paper studies the use of Matlab Simulink software to design 2DPSK modem system. First it introduces the basic principles of 2DPSK modulation and demodulation and Matlab Simulink simulation software. Then according to the principle of 2DPSK modulation