【目的】在通信技术的发展中，通信系统的仿真技术是一个重点.尤其是通信技术在生活中的应用，更是
必不可少的，因而研究和改善通信工程的应用是十分必要的。【方法】本次课程设计主要运用 MATLAB
集成环境下的 M 文件编程仿真平台进行 N 路信号占用频分复用系统的设计与建模。主要是对多路信号
进行 SSB 及 FM 调制，叠加，然后再进行解调，恢复出基带信号。【结果】程序运行的结果展现了产生
的信号，以及后续信号的调制、加高斯白噪声、叠加、解调及滤波等，在误差允许的范围为内，结果是
正确的.【结论】所设计的频分复用系统,可靠性好,稳定性高，抗噪声强,以后具有良好的应用前景。
【 objective 】 in the development of communication technology ， the communication system
simulation technology is a key。 Communication technology in the application of life, in particular,
is more essential， thus research and application is very necessary to improve communication
engineering。 【 method 】 the course design of the main use of MATLAB M file programming
simulation platform of integrated environment is N signal takes the design and modeling of
frequency division multiplexing system 。 Mainly for SSB modulation and FM multiplex signals ，
overlay， then carries on the demodulation, restore the baseband signal. [results] the result of the
program is running shows the signal, and subsequent signal modulation, add white gaussian
noise，superposition，demodulation and filtering etc。, within the range of allowable error is，the
result is correct。 【 conclusion 】 the designed frequency division multiplexing system ， good
reliability, high stability, strong resistance to noise, then has a good application prospect。
