Design and characterization of a full-duplex multiantenna system for wifi networks

Melissa Duarte, Ashutosh Sabharwal, Vaneet Aggarwal, Rittwik Jana, K. K. Ramakrishnan, Christopher W. Rice, N. K. Shankaranarayanan

Research output: Contribution to journalArticlepeer-review

391 Scopus citations


In this paper, we present an experiment-and simulation-based study to evaluate the use of full duplex (FD) as a potential mode in practical IEEE 802.11 networks. To enable the study, we designed a 20-MHz multiantenna orthogonal frequency-division-multiplexing (OFDM) FD physical layer and an FD media access control (MAC) protocol, which is backward compatible with current 802.11. Our extensive over-the-air experiments, simulations, and analysis demonstrate the following two results. First, the use of multiple antennas at the physical layer leads to a higher ergodic throughput than its hardware-equivalent multiantenna half-duplex (HD) counterparts for SNRs above the median SNR encountered in practical WiFi deployments. Second, the proposed MAC translates the physical layer rate gain into near doubling of throughput for multinode single-AP networks. The two results allow us to conclude that there are potentially significant benefits gained from including an FD mode in future WiFi standards.

Original languageEnglish (US)
Article number6656015
Pages (from-to)1160-1177
Number of pages18
JournalIEEE Transactions on Vehicular Technology
Issue number3
StatePublished - Mar 2014


  • 802.11
  • Full-duplex
  • WiFi
  • media access control (MAC)
  • orthogonal frequency-division multiplexing (OFDM)

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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