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Low Resolution Phase Shifters Suffice for Full-Duplex mmWave Communications
KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems Engineering.ORCID iD: 0000-0002-4503-4242
Rice Univ, Houston, TX USA..
KTH, School of Electrical Engineering and Computer Science (EECS), Automatic Control. Ericsson Res, Kista, Sweden..ORCID iD: 0000-0002-2289-3159
KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems Engineering.ORCID iD: 0000-0001-9810-3478
2019 (English)In: 2019 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS), IEEE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Full-duplex base-stations with half-duplex nodes, allowing simultaneous uplink and downlink from different nodes, have the potential to double the spectrum efficiency without adding additional complexity at mobile nodes. Hybrid beam forming is commonly used in millimeter wave systems for its implementation efficiency. An important element of hybrid beam-forming is quantized phase shifters. In this paper, we ask if low-resolution phase shifters suffice for beamforming-based full-duplex millimeter wave systems. We formulate the problem of joint design for both self-interference suppression and downlink beamforming as an optimization problem, which we solve using penalty dual decomposition to obtain a near-optimal solution. Numerical results indicate that low-resolution phase shifters can perform close to systems that use infinite phase shifter resolution, and that even a single quantization bit outperforms half-duplex transmissions in both low and high residual self-interference scenarios.

Place, publisher, year, edition, pages
IEEE , 2019.
Series
IEEE International Conference on Communications Workshops, ISSN 2164-7038
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-261051DOI: 10.1109/ICCW.2019.8756743ISI: 000484917800046Scopus ID: 2-s2.0-85070255997ISBN: 978-1-7281-2373-8 (print)OAI: oai:DiVA.org:kth-261051DiVA, id: diva2:1356663
Conference
IEEE International Conference on Communications (ICC), MAY 20-24, 2019, Shanghai, PEOPLES R CHINA
Note

QC 20191002

Available from: 2019-10-02 Created: 2019-10-02 Last updated: 2019-10-02Bibliographically approved

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Barros da Silva Jr., José MairtonFodor, GaborFischione, Carlo

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