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A road to future broadband wireless access: MIMO-OFDM-Based air interface

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1 Author(s)
Hongwei Yang ; Res. & Innovation Center, Alcatel Shanghai Bell Co. Ltd., China

Orthogonal frequency-division multiplexing is a popular method for high-data-rate wireless transmission. OFDM may be combined with multiple antennas at both the access point and mobile terminal to increase diversity gain and/or enhance system capacity on a time-varying multipath fading channel, resulting in a multiple-input multiple-output OFDM system. In this article we give a brief technical overview of MIMO-OFDM system design. We focus on various research topics for the MIMO-OFDM-based air interface, including spatial channel modeling, MIMO-OFDM transceiver design, MIMO-OFDM channel estimation, space-time techniques for MIMO-OFDM, and error correction code. The corresponding link-level simulation results are encouraging, and show that MIMO-OFDM is a promising road to future broadband wireless access.

Published in:

Communications Magazine, IEEE  (Volume:43 ,  Issue: 1 )