ETHZ > EE Dept > Comm Tech Lab > Comm Theory Group > Publications >

An overview of MIMO communications - A key to Gigabit wireless

Authors

Arogyaswami J. Paulraj, Dhananjay A. Gore, Rohit U. Nabar, and Helmut Bölcskei

Reference

Proceedings of the IEEE, Vol. 92, No. 2, pp. 198-218, Feb. 2004, (invited paper)

DOI: 10.1109/JPROC.2003.821915

[BibTeX, LaTeX, and HTML Reference]

Abstract

High data rate wireless communications, nearing 1Gigabit/second (Gbps) transmission rates, is of interest in emerging Wireless Local Area Networks (WLANs) and home Audio/Visual (A/V) networks. Designing very high speed wireless links that offer good Quality-of-Service (QoS) 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 1Gbps data rate requirement with a single-transmit single-receive antenna wireless system if the product of bandwidth (measured in Hz) and spectral efficiency (measured in bps/Hz) 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 1Gbps wireless links a reality. This paper provides an overview of MIMO wireless technology covering channel models, performance limits, coding, and transceiver design.

Keywords

MIMO, channel models, capacity, space-time coding, spatial multiplexing, receiver design, performance limits, MIMO-OFDM

Download this document:

Copyright Notice: © 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.