摘 要本文首先介绍了通讯的历史和进展，随后介绍了数字信号的二进制和多进制对载波的幅度、频率或相位进行调制，并以幅度键控（ ASK）为例利用MATLAB 集成环境下的 Simulink 仿真平台对调制解调的原理、过程以与特点进行深化了解以与各种模拟调制方式性能的比较。对于不同的调制解调方式，让它们处于高斯白噪声或者随机环境下，对它们的信噪比、增益、误码率等进行对比分析，总结归纳出各自的优缺点以与应用。关键字：二进制，多进制，MATLAB，Simulink，高斯白噪声ABSTRACTIn this paper, we first introduce the history and development of communication, then introduces the digital signal of binary and M-ary the carrier amplitude, frequency, or phase modulation, and amplitude shift control (ask) for example to use the integrated environment of MATLAB Simulink simulation platform of modulation and demodulation principle, process and characteristics of the deep understanding and various modulation performance simulation. For different modulation and demodulation, let them under Gaussian white noise or random environment, their signal to noise ratio, gain and bit error rate (BER) are compared and analyzed, summed up their respective advantages and disadvantages as well as application.Keywords: binary, multi band, MATLAB, Simulink, Gauss white noise 目 录摘要 1ABSTRACT2前言 3目录 4第 1 章 通信技术的历史和进展 51.1 通信的概念 51.2 通信的进展史简介 61.3 通信技术的进展现状和趋势 7第 2 章 数字信号频带传输系统的基本原理 82.1 数字信号的二进制调制 82.1.1 幅度键控（2ASK）82.1.2 频移键控（2FSK）102.1.3 相移键控（2PSK）132.2 数字信号的多进制调制 142.2.1 MASK 的调制 142.2.2 MFSK 的调制 152.2.3 MPSK 的调制 16第 3 章 仿真与结果分析 193.1 ASK 调制与解调 193.2 加入高斯白噪声后的 ASK 调制与解调 253.3 误码率的计算 28参考文献 31致 32摘要本文首先介绍了通讯的历史和进展，随后介绍了数字信号的二进制和多进制对载波的幅度、频率或相位进行调制，并以幅度键控（ASK）为例利用 ...
