On the throughput of full-duplex MIMO in the multi-link case

Diep N. Nguyen, Marwan Krunz, Stephen Hanly

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

1 Scopus citations

Abstract

We are concerned with the throughput of a full-duplex (FD) MIMO network. Unlike conventional half-duplex (HD) MIMO, two wireless devices of a bidirectional FD-MIMO link have freedom of selecting which antennas/RF-chains to transmit or receive before tuning their radiation patterns to maximize the link's throughput. The freedom in configuring the function of available RF-chains, resulting in various FD-MIMO transmission modes, is referred to as FD-MIMO freedom that is shown to significantly improve the spectral efficiency of a given link. For a given RF-chain/antenna selection of a set of FD-MIMO links, we end up with a non-convex throughput maximization problem of a heterogeneous MIMO network. We design both centralized (using the augmented Lagrange function) and distributed algorithm (using a hierarchical game and pricing) to solve the problem for its locally optimal solutions. Comparing the achieved throughput of the FD-MIMO network, averaged over all obtained locally optimal solutions, with that when FD-MIMO nodes choose to operate in an HD mode, we find the HD mode surprisingly outperforms the FD mode. This trend is also observed when exploring all possible communication modes of a small size FD-MIMO network.

Original languageEnglish (US)
Title of host publication2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2014
PublisherIEEE Computer Society
Pages421-428
Number of pages8
ISBN (Print)9783901882630
DOIs
StatePublished - Jan 1 2014
Event2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2014 - Hammamet, Tunisia
Duration: May 12 2014May 16 2014

Publication series

Name2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2014

Other

Other2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2014
CountryTunisia
CityHammamet
Period5/12/145/16/14

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Keywords

  • MIMO
  • Nash equilibrium
  • Spectral efficiency
  • beamforming
  • full-duplex
  • nonconvex optimization

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Modeling and Simulation

Cite this

Nguyen, D. N., Krunz, M., & Hanly, S. (2014). On the throughput of full-duplex MIMO in the multi-link case. In 2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2014 (pp. 421-428). [6850328] (2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2014). IEEE Computer Society. https://doi.org/10.1109/WIOPT.2014.6850328