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    Deconstructing space-frequency correlated ultrawideband MIMO channels

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    Authors
    Hong, Xuemin
    Wang, Cheng-Xiang
    Thompson, John
    Allen, Ben
    Malik, Wasim Q.
    Affiliation
    Heriot-Watt University
    Issue Date
    2008-09
    Subjects
    MIMO communication
    correlation methods
    diversity reception
    ultra wideband communication
    ultrawideband (UWB)
    
    Metadata
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    Abstract
    Conventional correlation models fail to accurately represent the correlation properties of ultrawideband (UWB) multiple-input multiple-output (MIMO) channels. In our previous work, a framework for constructing correlated UWB MIMO channel models was proposed, where spatial correlation was introduced into both the multipath amplitude and time-of-arrival (ToA) in the channel impulse response. Based on this framework, in this paper we first present a simplified UWB MIMO channel model that represents a reasonable compromise between analytical tractability and model accuracy. We show that this model yields a structured space-frequency (SF) channel covariance matrix, making it suitable for theoretical system performance analysis. To illustrate the merit of this model, we apply it to evaluate the maximum diversity order in SF coded UWB MIMO systems. In contrast to previous work based on conventional wideband MIMO correlated channel models, we show that the maximum diversity order of a UWB MIMO system is not limited by the sum of the ranks of multipath amplitude correlation matrices.
    Citation
    Hong, X., Wang, C., Thompson, J., Allen, B., Malik, W.Q. (2008) 'Deconstructing space-frequency correlated ultrawideband MIMO channels' Ultra-Wideband, 2008. ICUWB 2008. IEEE International Conference on, vol 1:47-50
    Publisher
    IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
    URI
    http://hdl.handle.net/10547/270975
    DOI
    10.1109/ICUWB.2008.4653282
    Additional Links
    http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4653282
    Type
    Conference papers, meetings and proceedings
    Language
    en
    ae974a485f413a2113503eed53cd6c53
    10.1109/ICUWB.2008.4653282
    Scopus Count
    Collections
    Centre for Wireless Research (CWR)

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