Spatial degrees-of-freedom in large-array full-duplex: the impact of backscattering

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dc.citation.issueNumber286en_US
dc.citation.journalTitleEURASIP Journal on Wireless Communications and Networkingen_US
dc.citation.volumeNumber2016en_US
dc.contributor.authorEverett, Evanen_US
dc.contributor.authorSabharwal, Ashutoshen_US
dc.date.accessioned2017-05-22T17:16:48Zen_US
dc.date.available2017-05-22T17:16:48Zen_US
dc.date.issued2016en_US
dc.description.abstractThe key challenge for in-band full-duplex wireless communication is managing self-interference. Many designs have employed spatial isolation mechanisms, such as shielding or multi-antenna beamforming, to isolate the self-interference waveform from the receiver. Because such spatial isolation methods confine the transmit and receive signals to a subset of the available space, the full spatial resources of the channel may be under-utilized, expending a cost that may nullify the net benefit of operating in full-duplex mode. In this paper, we leverage an antenna-theory-based channel model to analyze the spatial degrees of freedom available to a full-duplex capable base station. We observe that whether or not spatial isolation out-performs time-division (i.e., half-duplex) depends heavily on the geometric distribution of scatterers. Unless the angular spread of the objects that scatter to the intended users is overlapped by the spread of objects that backscatter to the base station, then spatial isolation outperforms time division, otherwise time division may be optimal.en_US
dc.identifier.citationEverett, Evan and Sabharwal, Ashutosh. "Spatial degrees-of-freedom in large-array full-duplex: the impact of backscattering." <i>EURASIP Journal on Wireless Communications and Networking,</i> 2016, no. 286 (2016) Springer: https://doi.org/10.1186/s13638-016-0781-3.en_US
dc.identifier.doihttps://doi.org/10.1186/s13638-016-0781-3en_US
dc.identifier.urihttps://hdl.handle.net/1911/94316en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.rightsThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleSpatial degrees-of-freedom in large-array full-duplex: the impact of backscatteringen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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