Degrees of freedom of spatial self-interference suppression for in-band full-duplex with inter-node interference

Yujun Chen; Ashutosh Sabharwal

doi:10.1109/ACSSC.2016.7869590

Degrees of freedom of spatial self-interference suppression for in-band full-duplex with inter-node interference

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We study a three-node network with a full-duplex base-station communicating with one uplink and one downlink half-duplex node. In this network, both self-interference and inter-node interference are present. We use an antenna-theory-based channel model to study the spatial degrees of freedom of such network, and study if and how much does spatial isolation outperforms time-division (i.e. half-duplex) counterpart. Using degrees of freedom analysis, we show that spatial isolation outperforms time division, unless the angular spread of the objects that scatters to the intended users is overlapped by the spread of objects that back scatters to the receivers.

Original language	English (US)
Title of host publication	Conference Record of the 50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016
Editors	Michael B. Matthews
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1327-1331
Number of pages	5
ISBN (Electronic)	9781538639542
DOIs	https://doi.org/10.1109/ACSSC.2016.7869590
State	Published - Mar 1 2017
Event	50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016 - Pacific Grove, United States Duration: Nov 6 2016 → Nov 9 2016

Publication series

Name	Conference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)	1058-6393

Conference

Conference	50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016
Country/Territory	United States
City	Pacific Grove
Period	11/6/16 → 11/9/16

ASJC Scopus subject areas

Signal Processing
Computer Networks and Communications

Access to Document

10.1109/ACSSC.2016.7869590

Cite this

Chen, Y., & Sabharwal, A. (2017). Degrees of freedom of spatial self-interference suppression for in-band full-duplex with inter-node interference. In M. B. Matthews (Ed.), Conference Record of the 50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016 (pp. 1327-1331). Article 7869590 (Conference Record - Asilomar Conference on Signals, Systems and Computers). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ACSSC.2016.7869590

Degrees of freedom of spatial self-interference suppression for in-band full-duplex with inter-node interference. / Chen, Yujun; Sabharwal, Ashutosh.
Conference Record of the 50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016. ed. / Michael B. Matthews. Institute of Electrical and Electronics Engineers Inc., 2017. p. 1327-1331 7869590 (Conference Record - Asilomar Conference on Signals, Systems and Computers).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chen, Y & Sabharwal, A 2017, Degrees of freedom of spatial self-interference suppression for in-band full-duplex with inter-node interference. in MB Matthews (ed.), Conference Record of the 50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016., 7869590, Conference Record - Asilomar Conference on Signals, Systems and Computers, Institute of Electrical and Electronics Engineers Inc., pp. 1327-1331, 50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016, Pacific Grove, United States, 11/6/16. https://doi.org/10.1109/ACSSC.2016.7869590

Chen Y, Sabharwal A. Degrees of freedom of spatial self-interference suppression for in-band full-duplex with inter-node interference. In Matthews MB, editor, Conference Record of the 50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016. Institute of Electrical and Electronics Engineers Inc. 2017. p. 1327-1331. 7869590. (Conference Record - Asilomar Conference on Signals, Systems and Computers). doi: 10.1109/ACSSC.2016.7869590

Chen, Yujun ; Sabharwal, Ashutosh. / Degrees of freedom of spatial self-interference suppression for in-band full-duplex with inter-node interference. Conference Record of the 50th Asilomar Conference on Signals, Systems and Computers, ACSSC 2016. editor / Michael B. Matthews. Institute of Electrical and Electronics Engineers Inc., 2017. pp. 1327-1331 (Conference Record - Asilomar Conference on Signals, Systems and Computers).

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AB - We study a three-node network with a full-duplex base-station communicating with one uplink and one downlink half-duplex node. In this network, both self-interference and inter-node interference are present. We use an antenna-theory-based channel model to study the spatial degrees of freedom of such network, and study if and how much does spatial isolation outperforms time-division (i.e. half-duplex) counterpart. Using degrees of freedom analysis, we show that spatial isolation outperforms time division, unless the angular spread of the objects that scatters to the intended users is overlapped by the spread of objects that back scatters to the receivers.

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Degrees of freedom of spatial self-interference suppression for in-band full-duplex with inter-node interference

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