Title :
Broadband MIMO-OFDM wireless communications
Author :
Stuber, G.L. ; Barry, J.R. ; McLaughlin, S.W. ; Ye Li ; Ingram, M.A. ; Pratt, T.G.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
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.
Keywords :
MIMO systems; OFDM modulation; adaptive antenna arrays; broadband networks; channel estimation; data communication; diversity reception; error correction codes; signal processing; software radio; synchronisation; telecommunication network planning; time-varying channels; adaptive antenna arrays; analog beam forming techniques; antenna arrays; broadband MIMO-OFDM wireless communication; broadband wireless communication; channel estimation; channel measurements; channel modeling; channel tracking; diversity gain; error control coding; frequency synchronization; frequency-selective channels; high data rate wireless transmission; multiple-input multiple-output configuration; orthogonal frequency division multiplexing; physical layer; signal processing; software radio; space-time techniques; time synchronization; time-varying channels; Adaptive arrays; Antenna arrays; Broadband communication; Diversity methods; MIMO; OFDM; Radio transmitters; Receiving antennas; Transmitting antennas; Wireless communication;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/JPROC.2003.821912
