基于matlab的fhss通信系统设计与实现毕设论文.doc

目 录 摘要 III Abstract V 第1章 绪论 - 1 - 1.1 研究扩频通信的目的和意义 - 1 - 1.2 扩频通信的应用发展 - 1 - 1.3 FHSS通信 - 2 - 1.4 设计内容及结构 - 4 - 第2章 扩频通信 - 5 - 2.1 扩频通信 - 5 - 2.1.1 扩频通信的定义 - 5 - 2.1.2 扩频通信的理论基础 - 5 - 2.2 扩频通信方式 - 8 - 2.3 随机序列码 - 8 - 第3章 FHSS通信系统原理 - 11 - 3.1 FHSS通信的概述 - 11 - 3.1.1 FHSS系统的组成部分 - 11 - 3.2 FHSS通信系统工作原理 - 12 - 3.2.1 FHSS通信系统数学模型 - 12 - 3.2.2 跳频图案 - 14 - 3.2.3 FHSS通信抗干扰方式 - 16 - 3.2.4 FHSS通信系统的同步 - 19 - 第4章 FHSS通信系统仿真 - 23 - 4.1 FHSS通信系统MATLAB仿真 - 23 - 4.2 FHSS通信系统仿真模型 - 23 - 4.3 仿真结果及分析 - 24 - 设计总结 - 27 - 参考文献 - 29 - 致谢 - 31 - 附录 - 33 - 摘 要 扩频通信在军事领域长期的成功应用以及近年来在商业领域的异军突起，使其在通信技术中扮演重要的角色，而FHSS系统是一种典型扩展频谱通信系统，它在军事通信、移动通信、计算机无线数据传输和无线局域网等领域有着十分广泛的应用。 本文介绍了FHSS系统的基本工作过程，并利用MATLAB中的仿真系统实现FHSS系统的仿真并能直观地显示FHSS通信过程，其中涉及到PN码，频率合成器，BPSK调制解调等仿真系统。还介绍了系统设计方法与运行结果,通过仿真结果能直观地观察到FHSS通信系统的性能,有利于研究FHSS通信系统。 关键词：FHSS扩频，通信系统，跳频系统，仿真 MATLAB-based FHSS Communication System Design and Implementation Abstract Frequency Hopping system is a typical spread spectrum communication system.It has been very widely used in military communication, mobile communication, computer wireless data transmission, wireless LAN and other fields. This paper introduces the basic working process of Frequency Hopping system. Frequency Hopping system have been emulated and analyzed by System of MATLAB.FHSS communication process was displayed visually. The designing methods and running results of FHSS communication system were described. It can help to sdudy the principle of FHSS communication system. This article describes the basic work process FHSS system, and using MATLAB simulation system in the simulation of FHSS systems and can directly display FHSS communication process, involving PN code, frequency synthesizer, BPSK modulation and demodulation and other simulation systems. Also describes the design methods and operating results, the simulation results can be visually observed the performance of FHSS communications sys