Open Access

A MIMO-OFDM Testbed for Wireless Local Area Networks

  • Albert Guilléni Fàbregas1Email author,
  • Maxime Guillaud2,
  • Dirk TM Slock2,
  • Giuseppe Caire3,
  • Karine Gosse4,
  • Stéphanie Rouquette4,
  • Alexandre Ribeiro Dias4,
  • Philippe Bernardin4,
  • Xavier Miet4,
  • Jean-Marc Conrat5,
  • Yann Toutain6,
  • Alain Peden7 and
  • Zaiqing Li7
EURASIP Journal on Advances in Signal Processing20062006:018083

Received: 15 December 2004

Accepted: 21 June 2005

Published: 21 March 2006


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 EstimationWireless Local Area NetworkLocal Area NetworkChannel MeasurementMeasurement Campaign


Authors’ Affiliations

Institute for Telecommunications Research, University of South Australia, SPRI Building, Mawson Lakes Boulevard, Mawson Lakes, Australia
Eurécom Institute, Sophia Antipolis, France
Electrical Engineering Department, University of Southern California, Los Angeles, USA
Motorola Labs, Centre de Recherche de Motorola, Espace Technologique Saint-Aubin, France
France Telecom R&D, Belfort, France
Antennessa, Plouzane, France
École Nationale Supérieure des Télécommunications de Bretagne, Technopôle Brest-Iroise, Brest, 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.