mpsk在matlab,基于matlab的mpsk性能分析

41528d3028836879cd698677c3999917.gif基于matlab的mpsk性能分析

基于 MATLAB 的 MPSK 性能分析【摘 要】 通信系统中的数字调制技术是通信与信息系统领域的基础知识，而相移键控(MPSK)信号是作为常见的数字通信调制信号。目前，它已被广泛应用，不管是在传统的通信系统，还是移动通信系统或卫星通信系统。这些都是因为它的功率和频谱效率高的优点。因此对相移键控信号的调制解调原理的掌握有助于加深对调制技术的理解，并对深入学习新型的调制技术有指导作用。本文首先介绍数字通信系统的组成，然后分析数字调制系统中的几种基本调制解调方法，主要包括 MPSK 和 MDPSK。最后运用 MATLAB软件对 MPSK 和 MDPSK 进行仿真和分析，其中主要是通过仿真得到信噪比与误码率之间的曲线，然后对加性高斯白噪声环境下的性能进行分析，并与理论值相比较。最后，还对MPSK 与 MDPSK 在实际情况下的误码率进行了比较和分析。【关键词】 数字调制，MPSK，MDPSK，误码率，信噪比基于 MATLAB 的 MPSK 性能分析IIMPSK Perance Analysis Based On MATLAB【Abstract】 Digital modulation technology in communication system is basic knowledge in the field of communication and ination systems, and phase-shift keying (MPSK) signals are as common digital modulation signals. Due to its high power and spectrum utilization, MPSK have been widely used in traditional communications, mobile communications and satellite communications systems. Grasp of the phase-shift keying signal modulation and demodulation principle will help to deepen the understanding of modulation techniques, and it play a guiding role in-depth study of a new type of modulation technique. This paper first describes the composition of the digital communication system, and then analyzes several basic digital modulation systems, mainly includes MPSK and MDPSK. At last, using the MATLAB software to simulate and analyze the MPSK and MDPSK. Through the simulation, we get the curve between signal-to-noise ratio and the error rate. Then analyzes the perance under the Gaussian white noise environment, and compares with the theory. Finally, also has carried on the comparison and the analysis to MPSK and MDPSK in the actual situation error rate. 【Key words】 Digital modulation, MPSK, MDPSK, error rate, signal-to-noise ratio 基于 MATLAB 的 MPSK 性能分析IV目 录第一章 绪论 .11.1 课题背景 .11.2 调制技术的发展和趋势 .11.3 课题研究的意义 .21.4 本文内容安排 .3第二章 数字相位调制 .42.1 数字通信系统的组成及说明 .42.2 多进制相移键控 .52.2.1 2PSK 调制解调 52.2.2 4PSK 调制解调 72.2.3 8PSK 调制解调 92.3 多进制差分相移键控 112.3.1 2DPSK 调制解调 122.3.2 4DPSK 调制解调 132.3.3 8DPSK 调制解调 16第三章 多进制数字相位调制仿真 183.1 蒙特卡洛仿真的简单介绍 183.2 多进制数字相位调制性能仿真原理