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    On Uplink-Downlink Duality of Multi-Hop MIMO Relay Channel

    160222_160222.pdf (251.0Kb)
    Access Status
    Open access
    Authors
    Rong, Yue
    Khandaker, Muhammad
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Rong, Yue and Khandaker, M.R.A. 2011. On Uplink-Downlink Duality of Multi-Hop MIMO Relay Channel. IEEE Transactions on Wireless Communications. 10 (6): pp. 1923-1931.
    Source Title
    IEEE Transactions on Wireless Communications
    DOI
    10.1109/TWC.2011.041311.101366
    ISSN
    15361276
    School
    Department of Electrical and Computer Engineering
    Remarks

    © 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

    URI
    http://hdl.handle.net/20.500.11937/17935
    Collection
    • Curtin Research Publications
    Abstract

    For two-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay systems, the uplink-downlink duality has been recently investigated. In this paper, we establish the duality between uplink and downlink multi-hop AF-MIMO relay channels with any number of hops and any number of antennas at each node, which is a further generalization of several previously established results. We show that in the downlink relay system, signal-to-interference-noise ratios (SINRs) identical to those in the uplink relay system, and vice versa, can be achieved by two approaches. First, with the same total network transmission power constraint, one simply applies Hermitian transposed uplink relay amplifying matrices at relay nodes in the downlink system.Second, with transmission power constraint at each node of the relay network, one can use scaled and Hermitian transposed uplink relay amplifying matrices in the downlink system, with scaling factors obtained by switching power constraints at different nodes of the uplink system. As an application of the uplink-downlink duality, we propose an optimal design of the source precoding matrix and relay amplifying matrices for multi-hop MIMO relay system with a dirty paper coding (DPC) transmitter at the source node.

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