Fixed broadband wireless access: State of the art, challenges, and future directions
AuthorsHelmut Bölcskei, Arogyaswami J. Paulraj, K. V. S. Hari, Rohit U. Nabar, and Willie W. Lu
ReferenceIEEE Communications Magazine, Vol. 39, No. 1, pp. 100-108, Jan. 2001, (invited paper)
AbstractThis article provides an overview of fixed broadband wireless access technology. Focusing on the band below 3 GHz, we describe BWA service and carrier needs, deployment scenarios, architectural requirements, physical layer, medium access control, and radio link protocol requirements. We characterize fixed BWA channels, outline the major challenges of fixed BWA, and study requirements for future BWA systems. Finally, we show that the use of multiple antennas at both ends of a fixed wireless link provides significant leverages.
KeywordsFixed broadband wireless access, MMDS, Internet, cellular systems, radio channels, multiple antennas, space-time coding, transmit diversity, spatial multiplexing, BLAST
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