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    Efficient MIMO equalization for downlink multi-code CDMA: complexity optimization and comparative study

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    Author
    Guo, Yuanbin; Zhang, Jianzhong (Charlie); McCain, Dennis; Cavallaro, Joseph R.
    Date
    2005-02-01
    Abstract
    In this paper, we present an efficient LMMSE chip equalizer to suppress the interference caused by the multipath fading channel in the MIMO multi-code CDMA downlink. The block-Toeplitz structure in the correlation matrix is approximated with a block circulant matrix. An FFT-based algorithm is applied to avoid the Direct-Matrix-Inverse (DMI) in the system equation. Hermitian optimization is proposed to further reduce the complexity. A comparative study in both performance and complexity with the Conjugate-Gradient (CG) algorithm is then presented. The simulation shows very promising results for the FFT-based equalizer compared with both the DMI and CG algorithms.
    Description
    Conference Paper
    Citation
    Y. Guo, J. (. Zhang, D. McCain and J. R. Cavallaro, "Efficient MIMO equalization for downlink multi-code CDMA: complexity optimization and comparative study," vol. 4, no. 7, 2004.
    Published Version
    http://dx.doi.org/10.1109/GLOCOM.2004.1378459
    Keyword
    MIMO equalizer; Multi-code CDMA; complexity; MIMO equalizer; Multi-code CDMA; More... complexity Less...
    Type
    Conference paper
    Citable link to this page
    https://hdl.handle.net/1911/19928
    Metadata
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    • ECE Publications [1468]
    • Rice Wireless [268]

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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map