Transmission Strategies in Imperfect Bi-directional Full-Duplex MIMO Systems

We address a bi-directional full-duplex (FD) multiple-input multiple-output (MIMO) system equipped with limited capability for analog self-interference cancellation (SIC) and subjected to hardware (HW) impairments and imperfect channel state information (CSI) at the nodes. We propose an alternating...

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Bibliographic Details
Published inIEEE Wireless Communications and Networking Conference : [proceedings] : WCNC pp. 1 - 6
Main Authors Iimori, Hiroki, Abreu, Giuseppe, Ishibashi, Koji, Alexandropoulos, George C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2019
Subjects
Array signal processing
beamforming (BF)
Bidirectional control
Channel estimation
Full-duplex MIMO
Interference
MIMO communication
optimization
power minimization
Radio frequency
self-interference cancellation
Signal to noise ratio
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ISSN1558-2612
DOI10.1109/WCNC.2019.8885916

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Summary:We address a bi-directional full-duplex (FD) multiple-input multiple-output (MIMO) system equipped with limited capability for analog self-interference cancellation (SIC) and subjected to hardware (HW) impairments and imperfect channel state information (CSI) at the nodes. We propose an alternating algorithm to minimize transmit (TX) power subject to quality of service (QoS) guarantees in such systems, where the signal to interference-plus-noise ratio (SINR) constraint is relaxed via a Fractional Programming (FP) approach so that optimal TX beamforming vectors can be obtained using standard convex optimization tools. Simulation results show that the proposed algorithm significantly reduces the required TX power while outperforms not only a conventional zero-forcing (ZF) scheme but also the State-of-the-Art (SotA) method in terms of outage probabilities of the prescribed SINRs.
ISSN:1558-2612
DOI:10.1109/WCNC.2019.8885916