Broadband MIMO-OFDM wireless communications

• Published in: Proceedings of the IEEE Vol. 92; no. 2; pp. 271 - 294
• Main Authors: Stuber, G.L., Barry, J.R., McLaughlin, S.W., Ye Li, Ingram, M.A., Pratt, T.G.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.02.2004; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive arrays; Algorithms; Antenna arrays; Beams (radiation); Broadband; Broadband communication; Channels; Coding; Diversity methods; Forming techniques; MIMO; OFDM; Orthogonal Frequency Division Multiplexing; Radio transmitters; Receiving antennas; Tracking; Transmitting antennas; Wireless communication
• ISSN: 0018-9219; 1558-2256
• DOI: 10.1109/JPROC.2003.821912

Orthogonal frequency division multiplexing (OFDM) is a popular method for high data rate wireless transmission. OFDM may be combined with antenna arrays at the transmitter and receiver to increase the diversity gain and/or to enhance the system capacity on time-varying and frequency-selective channels, resulting in a multiple-input multiple-output (MIMO) configuration. The paper explores various physical layer research challenges in MIMO-OFDM system design, including physical channel measurements and modeling, analog beam forming techniques using adaptive antenna arrays, space-time techniques for MIMO-OFDM, error control coding techniques, OFDM preamble and packet design, and signal processing algorithms used to perform time and frequency synchronization, channel estimation, and channel tracking in MIMO-OFDM systems. Finally, the paper considers a software radio implementation of MIMO-OFDM.