Asymptotic Analysis of MIMO Multi-Cell Full-Duplex Networks

Jingwen Bai, Ashutosh Sabharwal

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

We study a multi-cell multi-user MIMO full-duplex network, where each base station (BS) has multiple antennas with full-duplex capability supporting single-antenna users with either full-duplex or half-duplex radios. We characterize the up- and downlink ergodic achievable rates for the case of linear precoders and receivers. The rate analysis includes practical constraints, such as imperfect self-interference cancellation, channel estimation error, training overhead, and pilot contamination. We show that the 2× gain of full duplex over half-duplex system remains in the asymptotic regime, where the number of BS antennas grows infinitely large. We numerically evaluate the finite SNR and antenna performance, which reveals that full-duplex networks can use significantly fewer antennas to achieve spectral efficiency gain over the half-duplex counterparts. In addition, the overall full-duplex gains can be achieved under realistic 3GPP multi-cell network settings despite the increased interference introduced in the full-duplex networks.

Original languageEnglish (US)
Article number7829421
Pages (from-to)2168-2180
Number of pages13
JournalIEEE Transactions on Wireless Communications
Volume16
Issue number4
DOIs
StatePublished - Apr 2017

Keywords

  • ergodic achievable rate
  • Full-duplex wireless
  • massive MIMO
  • multi-cell cellular networks

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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