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    Mutual Information of Buffer-Aided Full-Duplex Relay Channels

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    1704.02596v2.pdf
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    Description:
    Preprint
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    Type
    Preprint
    Authors
    Shafie, Ahmed El
    Salem, Ahmed Sultan
    Krikidis, Ioannis
    Al-Dhahir, Naofal
    Hamila, Ridha
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Date
    2017-04-09
    Permanent link to this record
    http://hdl.handle.net/10754/626525
    
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    Abstract
    We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multiple-output (MIMO) Gaussian relay channel. The FD relay still suffers from residual self-interference (RSI) after the application of self-interference mitigation techniques. We investigate both cases of a slow-RSI channel where the RSI is fixed over the entire codeword, and a fast-RSI channel where the RSI changes from one symbol duration to another within the codeword. We show that the RSI can be completely eliminated in the slow-RSI case when the FD relay is equipped with a buffer while the fast RSI cannot be eliminated. For the fixed-rate data transmission scenario, we derive the optimal transmission strategy that should be adopted by the source node and relay node to maximize the system throughput. We verify our analytical findings through simulations.
    Publisher
    arXiv
    arXiv
    1704.02596
    Additional Links
    http://arxiv.org/abs/1704.02596v2
    http://arxiv.org/pdf/1704.02596v2
    Collections
    Preprints; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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