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  • Research Article
  • Open Access

A MIMO-OFDM Testbed for Wireless Local Area Networks

  • 1Email author,
  • 2,
  • 2,
  • 3,
  • 4,
  • 4,
  • 4,
  • 4,
  • 4,
  • 5,
  • 6,
  • 7 and
  • 7
EURASIP Journal on Advances in Signal Processing20062006:018083

  • Received: 15 December 2004
  • Accepted: 21 June 2005
  • Published:


We describe the design steps and final implementation of a MIMO OFDM prototype platform developed to enhance the performance of wireless LAN standards such as HiperLAN/2 and 802.11, using multiple transmit and multiple receive antennas. We first describe the channel measurement campaign used to characterize the indoor operational propagation environment, and analyze the influence of the channel on code design through a ray-tracing channel simulator. We also comment on some antenna and RF issues which are of importance for the final realization of the testbed. Multiple coding, decoding, and channel estimation strategies are discussed and their respective performance-complexity trade-offs are evaluated over the realistic channel obtained from the propagation studies. Finally, we present the design methodology, including cross-validation of the Matlab, C++, and VHDL components, and the final demonstrator architecture. We highlight the increased measured performance of the MIMO testbed over the single-antenna system.


  • Channel Estimation
  • Wireless Local Area Network
  • Local Area Network
  • Channel Measurement
  • Measurement Campaign

Authors’ Affiliations

Institute for Telecommunications Research, University of South Australia, SPRI Building, Mawson Lakes Boulevard, Mawson Lakes, SA, 5095, Australia
Eurécom Institute, 2229 Route des Crêtes, Sophia Antipolis, 06904, France
Electrical Engineering Department, University of Southern California, 3740, McClintock Avenue, Los Angeles, CA 90089, USA
Motorola Labs, Centre de Recherche de Motorola, Espace Technologique Saint-Aubin, Gif-sur-Yvette, 91193, France
France Telecom R&D, 3 avenue des Usines, Belfort, 90007, France
Antennessa, avenue la Perouse, Plouzane, 29280, France
École Nationale Supérieure des Télécommunications de Bretagne, Technopôle Brest-Iroise, Brest, 29238, France


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© Albert Guillén i Fàbregas et al. 2006

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.