Coexistence in wireless networks with heterogeneous self-interference cancellation capabilities

Wessam Afifi, Mohammad J. Abdel-Rahman, Marwan M Krunz, Allen B. Mackenzie

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

2 Scopus citations

Abstract

Recently, tremendous progress has been made in self-interference cancellation (SIC) techniques that enable a wireless device to transmit and receive data simultaneously on the same frequency channel, a.k.a. in-band full-duplex (FD) communications. Although operating in a FD mode significantly improves the throughput of a single wireless link, it doubles the number of concurrent transmissions, which limits the potential for coexistence between multiple FD-enabled links. In this paper, we consider the problem of concurrent transmissions between two FD-enabled links with different SIC capabilities; each link can operate in either FD or half-duplex (HD) mode. Following a game-theoretic framework, we aim to determine the stable behavior (FD or HD) for the two coexisting links. To achieve this objective, we first analyze a simple normal form game between the two links, which provides some insight into the coexistence problem. It turns out that the outcome of this game depends on two factors: The amount of residual self-interference (due to imperfect SIC) and the external interference from one link on the other. To capture the impact of residual self-interference, we formulate a Bayesian game between two links with heterogeneous SIC capabilities. In this game, each link (player) tries to maximize its throughput while minimizing the transmission power cost. We derive the Bayesian Nash equilibrium for this game. Furthermore, we determine the conditions on the external interference under which no outage occurs at both links. Finally, we conduct simulations and USRP hardware experiments to corroborate our analytical findings.

Original languageEnglish (US)
Title of host publication2016 14th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509013111
DOIs
StatePublished - Jun 15 2016
Event14th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2016 - Tempe, United States
Duration: May 9 2016May 13 2016

Other

Other14th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2016
CountryUnited States
CityTempe
Period5/9/165/13/16

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Optimization
  • Modeling and Simulation

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  • Cite this

    Afifi, W., Abdel-Rahman, M. J., Krunz, M. M., & Mackenzie, A. B. (2016). Coexistence in wireless networks with heterogeneous self-interference cancellation capabilities. In 2016 14th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2016 [7492922] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WIOPT.2016.7492922