Robust Joint Hybrid Analog-Digital Transceiver Design for Full-Duplex mmWave Multicell Systems

In this work, we investigate a full-duplex (FD) millimeter wave (mmWave) multicell system, where the BS of each cell receives signals from uplink (UL) users and transmits signals to downlink (DL) users at the same time, over the same frequency band. We maximize the sum rate lower bound of the FD mul...

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Bibliographic Details
Published inIEEE transactions on communications Vol. 68; no. 8; pp. 4788 - 4802
Main Authors Zhao, Ming-Min, Cai, Yunlong, Zhao, Min-Jian, Xu, Ying, Hanzo, Lajos
Format Journal Article
LanguageEnglish
Published New York IEEE 01.08.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Algorithms
Array signal processing
Beamforming
Computer architecture
Computer simulation
Convexity
Frequencies
Full-duplex
Interference
Iterative algorithms
Lower bounds
Millimeter wave communication
Millimeter waves
mmWave communications
multicell
Optimization
Radio frequency
robust transceiver design
Transceivers
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Summary:In this work, we investigate a full-duplex (FD) millimeter wave (mmWave) multicell system, where the BS of each cell receives signals from uplink (UL) users and transmits signals to downlink (DL) users at the same time, over the same frequency band. We maximize the sum rate lower bound of the FD multicell system by jointly optimizing the digital and analog beamforming matrices at the base station (BS) and the transmit power levels of the UL users under total transmit power constraints and unit-modulus constraints (due to the analog beamforming matrices), in the presence of imperfect channel state information (CSI). The problem under study is very challenging due to the highly non-convexity of the objective function and constraints. We transform this problem into an equivalent but more tractable form and propose a novel iterative algorithm based on the penalty dual decomposition (PDD) to solve it. The proposed algorithm is guaranteed to converge to the set of Karush-Kuhn-Tucker (KKT) solutions of the original problem. Moreover, we also extend our proposed algorithm to the structure of subarray. Simulation results validate the effectiveness of the proposed algorithm as compared with conventional nonrobust and half-duplex (HD) algorithms.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2020.2990723