1-bit Phase Shifters for Large-Antenna Full-Duplex mmWave Communications

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dc.citation.firstpage6916en_US
dc.citation.issueNumber10en_US
dc.citation.journalTitleIEEE Transactions on Wireless Communicationsen_US
dc.citation.lastpage6931en_US
dc.citation.volumeNumber19en_US
dc.contributor.authorda Silva, José Mairton Barros Jr.en_US
dc.contributor.authorSabharwal, Ashutoshen_US
dc.contributor.authorFodor, Gáboren_US
dc.contributor.authorFischione, Carloen_US
dc.date.accessioned2020-11-10T21:22:23Zen_US
dc.date.available2020-11-10T21:22:23Zen_US
dc.date.issued2020en_US
dc.description.abstractMillimeter-wave using large-antenna arrays is a key technological component for the future cellular systems, where it is expected that hybrid beamforming along with quantized phase shifters will be used due to their implementation and cost efficiency. In this paper, we investigate the efficacy of full-duplex mmWave communication with hybrid beamforming using low-resolution phase shifters. We assume that the self-interference can be sufficiently cancelled by a combination of propagation domain and digital self-interference techniques, without any analog self-interference cancellation. We formulate the problem of joint self-interference suppression and downlink beamforming as a mixed-integer nonconvex joint optimization problem. We propose LowRes, a near-to-optimal solution using penalty dual decomposition. Numerical results indicate that LowRes using low-resolution phase shifters perform within 3% of the optimal solution that uses infinite phase shifter resolution. Moreover, even a single quantization bit outperforms half-duplex transmissions, respectively by 29% and 10% for both low and high residual self-interference scenarios, and for a wide range of practical antenna to radio-chain ratios. Thus, we conclude that 1-bit phase shifters suffice for full-duplex millimeter-wave communications, without requiring any additional new analog hardware.en_US
dc.identifier.citationda Silva, José Mairton Barros Jr., Sabharwal, Ashutosh, Fodor, Gábor, et al.. "1-bit Phase Shifters for Large-Antenna Full-Duplex mmWave Communications." <i>IEEE Transactions on Wireless Communications,</i> 19, no. 10 (2020) IEEE: 6916-6931. https://doi.org/10.1109/TWC.2020.3006959.en_US
dc.identifier.doihttps://doi.org/10.1109/TWC.2020.3006959en_US
dc.identifier.urihttps://hdl.handle.net/1911/109539en_US
dc.language.isoengen_US
dc.publisherIEEEen_US
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 License.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.title1-bit Phase Shifters for Large-Antenna Full-Duplex mmWave Communicationsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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