Guest editorial [Special Issue on Advances in MIMO-OFDM]

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Multiple-Antenna Technology in WiMAX Systems

WiMAX is a wireless technology that provides broadband data at rates over 3 bits/second/Hz. In order to increase the range and reliability of WiMAX systems, the IEEE 802.16-2004 standard supports optional multiple-antenna techniques such as Alamouti Space-Time Coding (STC), Adaptive Antenna Systems (AAS) and Multiple-Input Multiple-Output (MIMO) systems. In this paper, we focus on techniques that do not require channel knowledge at the transmitter, which include both Alamouti STC and MIMO, but not AAS