通信系统的仿真

Communication System Simulation

通信系统仿真是以通信系统为对象建立模型,利用计算机对模型进行运算已达到模拟实际通信系统的目的。通常将实现信息传输的系统称为通信系统。由于现代通信系统结构越来越复杂,若对其进行完整仿真是很困难的。因此,可以通过简化问题的方法来降低系统的复杂度,将系统以模块化的形式表示,再针对其中各个模块分别进行建模。这一方法不管是在设计仿真还是在系统性能评估中均得以应用。以无线电通信系统为仿真对象,对于无线电通信系统常涉及到的调制与解调、信号在无线信道中传输和信号接收的问题进行研究。

Taking communication system as the object, model calculation was carried out to simulate the real communica- tion system. In general, the system which realizes information transmission is called communication system. As the commu- nication system becoming more and more complex, completely simulate the system is difficult. For this reason, the complex- ity of the system was simplified to represent it in modularization to model the modules separately. The method can be used in the system design as well as system evaluation. This paper takes the radio communication system as the object of simulation, studies the problems involved in the communication system such as modulation and demodulation, transmission and recep- tion of the information over wireless channel.