基于MIO的通系统仿真与分析研究深刻研究设计书166800203.docVIP

毕业设计（论文） 设计（论文）题目： 基于MIMO的通信系统仿真与分析研究 摘 要 随着移动通信的快速发展，用户数量与用户需求的急剧攀升，使得移动通信成为了通信界最具有市场潜力的技术。而无线通信与有线通信比较时暴露出来的弱点，如移动信道环境恶劣、用户使用突发性大等，使得提高无线通信的容量和质量需要诸多突破点。短缺的频谱资源刺激着人们向提高频谱利用率的方向努力。 自二十世纪九十年代MIMO（Multiple-Input Multiple-Output，多输入多输出）技术提出以来，由于在提高信道容量方面取得的突出成果，逐渐被无线通信领域的多个标准所应用，成为了在提供可靠无线传输链路方面一个重要突破。 MIMO技术是由多天线分集技术和空间编码技术相结合而产生的，它的一个很重要的特点就是：不再是对抗多径效应，而是巧妙地利用它。随着研究人员对MIMO通信系统理论、算法、应用等各个方面越来越多的研究，其已经成为了通信技术中的热门课题。 本文首先介绍了MIMO技术的基本原理和MIMO通信系统的信道模型，然后简要介绍了本文研究的仿真工具，即MATLAB/Simulink仿真软件。通过理论推导与软件仿真对MIMO通信系统的信道容量进行了研究，总结了各因素对信道容量的影响。最后本文对基于正交空时分组编码的MIMO通信系统进行了仿真。 【关键词】频谱利用率 MIMO通信系统 信道容量 正交空时分组编码 ABSTRACT With the rapid development of the mobile communications, the sharp rise in the number of users and the need of users making the mobile communications has become to the most potential technology in the communication market. However, when compared the wireless communications to the wired communications, the weaknesses unfolded. Such as the poor mobile channel environment, the sudden rise or down of the number of users or other characteristics, makes the improvement of the capacity and the quality of wireless communication needs many breakthroughs. But the shortage of spectrum resources stimulates people to improve the spectrum utilization. Since the 1990s, MIMO (Multiple-Input Multiple-Output) technology has been gradually applied to several standards of wireless communications and become an important breakthrough in many aspects, such as providing reliable wireless transmission link, for the outstanding achievements in improving the channel capacity. MIMO technology is combined with multi-antenna diversity technology and spatial coding technology. One of the most important features of MIMO technology is not confronting multipath effects, but using it cleverly. With more and more studies in the theory, algorithms, applications, etc. of MIMO communication systems by many researchers, it has become a hot topic in communications technolog