K-user symmetric MIMO distributed full-duplex network via wireless side-channels

Jingwen Bai, Chris Dick, Ashutosh Sabharwal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We study the impact of leveraging out-of-band wireless side-channels between interfering transceiver pairs in a symmetric K-user cyclic MIMO interference channel, where each transmitter interferes with only one neighboring receiver in a cyclic manner. The focus of the paper is to characterize the symmetric capacity of such K-user side-channel assisted MIMO cyclic interference channel with M transmit antennas and N receive antennas. We show that a vector bin-and-cancel scheme achieves the symmetric capacity to within a constant gap irrespective of channel parameters. We give a complete characterization of the symmetric generalized degrees of freedom (GDoF) per user per antenna as a function of antenna number ratio equation and side-channel bandwidth. The insights gained from the GDoF reveal the tradeoff between spatial resources from multiple antennas and spectral resources of the side-channels.

Original languageEnglish (US)
Title of host publication2013 51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1144-1151
Number of pages8
ISBN (Print)9781479934096
DOIs
StatePublished - 2013
Event51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013 - Monticello, IL, United States
Duration: Oct 2 2013Oct 4 2013

Publication series

Name2013 51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013

Conference

Conference51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013
Country/TerritoryUnited States
CityMonticello, IL
Period10/2/1310/4/13

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Systems Engineering

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