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    Effects of channel estimation errors on in-band full-duplex MIMO radios using adaptive transmit spatial mitigation

    Access Status
    Fulltext not available
    Authors
    Bliss, D.
    Rong, Yue
    Date
    2013
    Type
    Conference Paper
    
    Metadata
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    Citation
    Bliss, D. and Rong, Y. 2013. Effects of channel estimation errors on in-band full-duplex MIMO radios using adaptive transmit spatial mitigation, in Proceedings of the 2013 Asilomar Conference on Signals, Systems and Computers, Nov 3-6 2013, pp. 9-13. Pacific Grove, CA: IEEE.
    Source Title
    Conference Record - Asilomar Conference on Signals, Systems and Computers
    DOI
    10.1109/ACSSC.2013.6810218
    ISBN
    9781479923908
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/4852
    Collection
    • Curtin Research Publications
    Abstract

    In-band (cochannel) full-duplex multiple-Input multiple-output (MIMO) radios employ independent transmit and receive antenna arrays to enable simultaneous transmission and reception. One of the most significant challenges is the mitigation of the radio's self-interference. While there are numerous issues, such as dynamic range, that limit the ability of the radio to mitigate the interference, in this paper effects associated with self-interference channel estimation are considered. In this paper, adaptive transmit processing is used to protect the radio's receive antenna array from self-interference. We develop bounds on post-mitigation self-interference residual to provide guidance on the amount of training required to effectively remove channel estimation as a limiting concern. To allow extending the system dynamic range beyond the dynamic range of the receiver, we consider using a training signal that is lower in transmit power than the data signal. As a specific example, the three-node relay problem is explored. Simulation results are presented to demonstrate the validity of the bound.

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