本科毕业设计(论文)
基于MATLAB的通信系统设计
6 月
摘要
随着现代通信系统的飞速发展，计算机仿真已经成为今天分析和设计通信系统的重要工具，在通信系统的研发和教学中具有越来越重要的意义。仿真是衡量系统性能的工具，它通过仿真模型的仿真结果来判断原系统的性能从而为新系统的建立或原系统的改造提供可靠的参考。通过仿真，可以降低新系统失败的可能性，消除系统中潜在的瓶颈，防止对系统中某些功能部件造成的负载，优化系统的整体性能。
本文阐述通信的理论基础MATLAB/SIMULINK工具箱的基础知识和基于MATLAB的现代通信系统的仿真实现方法，利用M提供的可视化工具 建立通信系统仿真模型，详细讲述各模块的设计，并指出了仿真中要注意的问题Abstract
With the rapid development of modern communication, computer simulation has become important tools in analyzing and designing communication systems today, has become increasingly important in researching communication system and teaching. Simulation is a tool to measure system performance, through the simulation results of the simulation model to determine the performance of the original system so as to establish a new system or the transformation of the original system to provide a reliable reference. By simulation, it can reduce the fail probability of new system and eliminate the potential bottle-neck in system. It also can prevent the burden of some functional parts, in order to optimize the performance of the whole system.
This paper describes the basic theory of the communication systems and the important basic knowledge of CDMA likes the mobile communications, modern communication networks, communications systems and spread spectrum communication. As well as the basic knowledge of MATLAB/SIMULINK toolbox and methods to achieving the simulation of the communication systems which make use of the visualization tool (SIMULINK) to carry out the model of the modern communication system. At the same time, this paper takes the CDMA communication system as the example to explain the way of modeling in SIMULINK in details and narrate the problems which you will face in simulation.
Key Words：communication system, CDMA, simulation, modeling, spread spectrum
目录
摘要3
1. 通信系统基本理论8
1.1 通信与移动通信基本概念8
1.2 通信网的基本概念8
1.2.1 通信网的定义和构成8
1.2.2 通信网的基本结构9
1.3 通信系统10
1.3.1 信源与信宿11
1.3.2 发送设备11
1.3.3 信道12
1.3.4 接收设备12
1.4 通信方式12
1.4.1 单工通信12
1.4.2
