An Empirical Study on the Performance of Wireless OFDM Communications in Highly Reverberant Environments

Ryan Measel, Christopher S. Lester, Donald J. Bucci, Kevin Wanuga, Gregory Tait, Richard Primerano, Kapil R. Dandekar, Moshe Kam

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Reverberation chambers are closed reflective spaces that can emulate highly reverberant electromagnetic environments. The electromagnetic environment is primarily determined by the size of the cavity, effective conductivity, and leakage via apertures. In this effort, we investigate the performance of wireless OFDM communications in relation to the latter two by controlling the loading of a reverberation chamber and the effective aperture into a coupled cavity. A software defined radio measurement platform was used to assess the communication performance through a selection of link-level metrics including error vector magnitude, post processing signal-to-noise ratio, and throughput. The degradation of link quality is quantified for increasingly diffuse environments, as well as the improvement when leveraging a maximal ratio combining receiver diversity scheme. The link quality was found to improve in both the reverberation chamber and the coupled cavity for larger effective apertures. This result was analyzed using a time-dependent model for RF propagation in coupled cavities.

Original languageEnglish (US)
Article number7440869
Pages (from-to)4802-4812
Number of pages11
JournalIEEE Transactions on Wireless Communications
Volume15
Issue number7
DOIs
StatePublished - Jul 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

Keywords

  • OFDM
  • SIMO
  • SISO
  • electromagnetic coupling
  • fading
  • multipath channels
  • phase shift keying
  • quadrature amplitude modulation
  • receiving antennas
  • reverberation chambers
  • signal to noise ratio
  • throughput
  • wireless communication

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