An overview of MIMO communications - A key to Gigabit wireless
Arogyaswami J. Paulraj, Dhananjay A. Gore, Rohit U. Nabar, and Helmut Bölcskei
Proceedings of the IEEE, Vol. 92, No. 2, pp. 198-218, Feb. 2004, (invited paper)
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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.
in NLOS environments, we can, in principle, meet the 1Gbps data rate
requirement with a single-transmit single-receive antenna wireless system if
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
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
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.
MIMO, channel models, capacity, space-time
coding, spatial multiplexing, receiver design, performance limits, MIMO-OFDM
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