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    Correlation-based double-directional stochastic channel model for multiple-antenna ultra-wideband systems

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    Authors
    Hong, Xuemin
    Wang, C.-X.
    Allen, Ben
    Malik, Wasim Q.
    Issue Date
    2007-12
    Subjects
    MIMO communication
    correlation methods
    electromagnetic wave propagation
    indoor radio
    matrix algebra
    multifrequency antennas
    personal area networks
    stochastic systems
    time-of-arrival estimation
    ultra wideband antennas
    ultra wideband communication
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    Abstract
    A correlation-based double-directional stochastic channel model for indoor multiple-input multiple-output (MIMO) ultra-wideband (UWB) propagation channels is proposed. The proposed model extends the IEEE 802.15.3a standard model to spatially correlated MIMO channels. Both angular and temporal statistics are taken into account in the modelling procedure. Spatial correlation is introduced into the multipath amplitude and time-of-arrival (ToA) matrices of the channel model. Each amplitude matrix consists of entries of correlated lognormal random variables, whereas each ToA matrix is obtained as the sum of a reference matrix and a difference matrix. The frequency-dependent spatial correlation function is derived to give an insight of model properties. Model parameters are determined based on well-known measurement campaigns. In addition, simulation-based analysis indicates that this model has desirable spatial correlation properties in both the time and frequency domains. The ToA correlation matrix was also found to have dominant effects on the correlation characteristics. This suggests that future research into spatial correlation properties of MIMO-UWB channels should focus on ToA correlation characteristics, rather than amplitude correlation characteristics, which are the current focus of narrowband and wideband MIMO channel research.
    Citation
    Hong, X., Wang, C.-X., Allen, B. and Malik, W.Q (2007) "Correlation-based double-directional stochastic channel model for multiple-antenna ultra-wideband systems," Microwaves, Antennas & Propagation, IET , vol.1, no.6, pp.1182-1191, Dec. 2007 doi: 10.1049/iet-map:20060223
    Publisher
    IET
    Journal
    IET Microwaves, Antennas & Propagation
    URI
    http://hdl.handle.net/10547/270694
    DOI
    10.1049/iet-map:20060223
    Additional Links
    http://digital-library.theiet.org/content/journals/10.1049/iet-map_20060223
    Type
    Article
    Language
    en
    ISSN
    17518725
    ae974a485f413a2113503eed53cd6c53
    10.1049/iet-map:20060223
    Scopus Count
    Collections
    Centre for Wireless Research (CWR)

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