An overview of MIMO communications -: A key to gigabit wireless
An overview of MIMO communications -: A key to gigabit wireless
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DOI：
10.1109/jproc.2003.821915
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发表时间：
2004-02-01
影响因子：
20.6
通讯作者：
Bölcskei, H
中科院分区：
文献类型：
--
作者：
Paulraj, AJ;Gore, DA;Bölcskei, H
接近1-Gb/s传输速率的高数据速率无线通信在新兴的无线局域网和家庭音频/视频网络中受到关注。设计在非视距（NLOS）环境中提供良好服务质量和范围能力的超高速无线链路构成了重大的研究和工程挑战。忽略NLOS环境中的衰落，如果带宽（以赫兹为单位测量）和频谱效率（以每秒每赫兹的比特数为单位测量）的乘积等于10（9），则原则上我们可以用单发射单接收天线无线系统满足1 Gb/s的数据速率要求。正如我们将在本文中概述的那样，各种成本、技术和监管限制使得这种蛮力解决方案即使不是不可能，也是没有吸引力的。在发射器和接收器处使用多个天线（通常称为多输入多输出（MIMO）无线）是一种新兴的具有成本效益的技术，其在使1 Gb/s无线链路成为现实方面提供了实质性的杠杆作用。本文概述了MIMO无线技术，包括信道模型，性能限制，编码和收发器设计。
High data rate wireless communications, nearing 1-Gb/s transmission rates, is of interest in emerging wireless local area networks and home audio/visual networks. Designing very high speed wireless links that offer good quality-of-service and range capability in non-line-of-sight (NLOS) environments constitutes a significant research and engineering challenge. Ignoring fading in NLOS environments, we can, in principle, meet the 1-Gb/s data rate requirement with a single-transmit single-receive antenna wireless system if the product of bandwidth (measured in hertz) and spectral efficiency (measured in bits per second per hertz) is equal to 10(9). As we shall outline in this paper a variety of cost, technology and regulatory constraints make such a brute force solution unattractive if not impossible. The use of multiple antennas at transmitter and receiver popularly known as multiple-input multiple-output (MIMO) wireless is an emerging cost-effective technology that offers substantial leverages in making 1-Gb/s wireless links a reality. This paper provides an overview of MIMO wireless technology covering channel models, performance limits, coding, and transceiver design.