关键字:Matlab,GUI,数字调制技术,PSK ,DPSK,QAM
Abstract
Digital modulation techniques play an important role in communication systems.The simulation performance can be obtained and the analysis of modulation system can be easy by using MATLAB of monte carlo simulation on the digital modulation system. It can easily calls the simulation function, displays the simulation results, the simulation process of concrete, graphic, oversimplification, and can be compared of different digital modulation systems. Also it can analyze the advantages and disadvantages of different digital modulation systems, and it can gives the reference value of choosing the right modulation technique for the communication system by designed GUI (graphical user interface) of digital modulation system using MATLAB in the GUIDE or all the command line M-file.This paper gives a detailed introduction to the PSK, DPSK and QAM modulation and demodulation, its MATLAB simulation of BER performance, and built a GUI interface that on simple premise.
Keyword: Matlab,GUI,Digital Modulation System,PSK,DPSK,QAM
目录
摘要 I
Abstract II
目录 III
第1章 引言 1
1.1 背景 1
1.2 研究内容 1
第2章 相移键控PSK 3
2.1 BPSK的调制 3
2.2 BPSK的解调与检测 4
2.3 PSK的差错性能 5
2.4 PSK的优缺点 6
2.5 多进制相移键控MPSK 6
2.5.1 MPSK的调制解调 7
2.5.2 MPSK的星座图 8
2.5.3 MPSK的差错性能 9
2.6 MPSK的Monte Carlo仿真 9
第3章 差分相移键控DPSK 12
3.1 DPSK的调制 12
3.2 DPSK的解调与检测 13
3.3 DPSK的差错性能 14
3.4 DPSK与PSK的比较分析 15
3.5 多进制差分相移键控(MDPSK) 16
3.5.1 MDPSK的调制解调 16
3.5.2 MDPSK的差错性能 17
3.6 MDPSK的Monte Carlo仿真 18
第4章 16QAM 20
4.1 QAM的调制 21
4.2 QAM的解调与检测 22
4.3 AWGN信道中的QAM差错概率 24
4.4 16QAM的MATLAB仿真 24
第5章 图形用户界面(GUI) 26
5.1 GUI的概念 26
5.2 GUI的优点及应用范围 26
5.3 数字调制系统的GUI设计步骤 27
第6章 结束语 30
致谢 31
参考文献 32
附录 GUI程序源代码 33