文档介绍：多进制振幅调制与解调系统仿真与分析
刘山虎
(陕西理工学院物理与电信工程学院通信081班,陕西汉中 723003)
指导教师:李翠华
[摘要] 现代通信系统要求通信距离远、通信容量大、传输质量好。作为其关键技术之一的调制解调技术一直是人们研究的一个重要方向。从最早的模拟调幅调频技术的日臻完善,到现在数字调制技术的广泛运用,使得信息的传输更为有效和可靠。二进制数字振幅键控是一种古老的调制方式,也是各种数字调制的基础。本课程设计主要是利用MATLAB集成环境下的Simulink仿真平台,;用频谱分析模块观察调制前后信号频谱的变化;加上各种噪声源,用误码测试模块测量误码率;最后根据运行结果和波形来分析该系统性能。通过Simulink的仿真功能摸拟到了实际中的多进制振幅调制与解调情况。
[关键词]多进制振幅;误码率;调制;解调
MASK Modulation and Demodulation System Simulation and Analysis
Liu Shanhu
(Grade08,Class1,munication Engineering,School of Physics and munication Engineering of Shaanxi University of Technology, Han zhong 723003,China)
Tutor: Li Cuihua
[Abstract]Modern correspondence the system request to correspond by letter distance far, the correspondence has great capacity, delivers quality its making of one of the key techniques solution to adjust a technique have been an important direction that people frequency modulation technical day attains from the earliest emulation rate perfect, make to the number in nowadays technical of extensive usage, make delivering of information more effectively and system number's flapping a key to control is a kind of ancient make a way, is also various foundation that the number course designs mainly is make use of MATLAB integrated environment under of Simulink imitate true platform and design much aer enter make to flap to make with solution adjust to show a machine observation to make front and back signal wave a form;Make the variety of front and back signal frequency chart with the analytical mold piece observation of frequency chart;Plus various Zao voice source, test a mold piece with the mistake code diagraph mistake code rate;Finally analyze the system's function according to movement result and wave a true function of imitating of Simulink touched draw up physically medium of much enter make to flap to make with solution flirtation condition.
[Key words] MASK; th