[信息与通信]协作通信的中继选择算法研究.doc

摘要 摘要 近年来，新兴的多输入多输出(Multiple Input Multiple Output, MIMO)技术为改善通信系统性能、提高小区边缘用户的吞吐量和传输可靠性提供了一条有效的解决途径。协作通信技术则充分利用了无线电波的全向传播特性，使无线网络中的节点相互协作形成了虚拟的天线阵列来获得传统MIMO技术可以得到的空间分集增益。 作为一种新型的MIMO通信模式，中继节点选择技术是其关键技术之一，决定了协作是否能够带来性能增益。文章简要概述了协作通信的相关技术，依据不同分类对中继节点选择算法进行分类介绍，并且对近年来典型的中继节点选择算法进行分析和比较。得出结论：只有根据系统需求合理地选择、配置中继节点才能更好地优化协同通信的性能。 关键词：MIMO协作通信协作分集中继选择  Abstract Abstract In recent years, the emerging MIMO (Multiple Input Multiple Output) technology provides an effective solution to improve communication system performance, improve the throughput and transmission reliability of the users on the edge of the cell. Cooperative communication technology takes full advantage of radio wave’s propagation characteristics to make nodes in the wireless network form a virtual antenna array to get the spatial diversity gain as traditional MIMO technology can have. As a new MIMO communication mode, relay node selection technique is one of its key technologies and decides whether collaboration can bring a performance gain. This paper gives a brief overview of cooperative communication technology, elaborates different relay node selection algorithms according to different categories of classification, analyzes and compares several typical relay node selection algorithms. In the last, we get a conclusion that the only choose reasonable relay nodes based on system needs, can we better optimize the performance of cooperative communication. Keywords: MIMO Cooperative Communications Cooperative Diversity Relay Selection  目录 目录 目录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc326520079 第一章 绪论  PAGEREF _Toc326520079 \h 1  HYPERLINK \l _Toc326520080 1.1 通信技术的发展  PAGEREF _Toc326520080 \h 1  HYPERLINK \l _Toc326520081 1.2 4G技术介绍  PAGEREF _Toc326520081 \h 1  HYPERLINK \l _Toc326520082 1.2.1 4G技术简介  PAGEREF _Toc326520082 \h 1  HYPERLINK \l _Toc326520083 1.2.2 4G中的通信技术  PAGEREF _Toc326520083 \h 2  HYPERLINK \l _Toc326520084 1.3 协作通信的背景  PAGEREF _Toc326520084 \h