| Vol. 2, No. 1, November 2005 - Art. 8 |
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| Cross-layer Design for High QoS Indoor Wireless Networks Using Multiple Antenna Systems |
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by
Bongyong Song, Paul K. L. Yu, Rene L. Cruz, Bhaskar D. Rao and Christos G. Christodoulou (University of California, San Diego)
Copyright
Copyright © IEEE, 2004. Reprinted, with permission, from Cross-layer Design for High QoS Indoor Wireless Networks Using Multiple Antenna Systems, by Bongyong Song, Paul K. L. Yu, Rene L. Cruz, Bhaskar D. Rao and Christos G. Christodoulou, Proceedings of IEEE Infocom 2004, Hong Kong, March 7-11, 2004, http://www.ieee-infocom.org/2004/Papers/57_3.PDF |
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Abstract
We propose a crosslayer design technique to be used in quality of service (QoS) supported indoor wireless networks. To support multimedia applications requiring high bandwidth and on time delivery, we propose a set of highly spectrum efficient radio resource management algorithms. We focus on the optimization of downlink since many kinds of Internet traffic show the downlink dominance in their traffic asymmetry. Link scheduling at the MAC layer and various physical layer functions, such as phased array antenna beamforming, power control and link adaption, are jointly optimized to maximize the spectral efficiency of the network while satisfying the QoS requirements. In addition, a novel antenna array architecture is proposed which has remotely spaced antennas over the entire area of radio coverage. This distributed antenna system (DAS) naturally generates richer spatial diversity than conventional array antenna systems (AAS), and achieves higher capacity. Numerical examples conducted for a line of sight (LOS) environment demonstrate that a network with DAS outperforms one with AAS in terms of signal coverage and provides 40 - 160% higher capacity. |
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