Open Access

A Portable MIMO Testbed and Selected Channel Measurements

  • Paul Goud Jr1Email author,
  • Robert Hang1,
  • Dmitri Truhachev1 and
  • Christian Schlegel1
EURASIP Journal on Advances in Signal Processing20062006:051490

https://doi.org/10.1155/ASP/2006/51490

Received: 30 November 2004

Accepted: 22 August 2005

Published: 27 March 2006

Abstract

A portable multiple-input multiple-output (MIMO) testbed that is based on field programmable gate arrays (FPGAs) and which operates in the 902–928 MHz industrial, scientific, and medical (ISM) band has been developed by the High Capacity Digital Communications (HCDC) Laboratory at the University of Alberta. We present a description of the HCDC testbed along with MIMO channel capacities that were derived from measurements taken with the HCDC testbed for three special locations: a narrow corridor, an athletics field that is surrounded by a metal fence, and a parkade. These locations are special because the channel capacities are different from what is expected for a typical indoor or outdoor channel. For two of the cases, a ray-tracing analysis has been performed and the simulated channel capacity values closely match the values calculated from the measured data. A ray-tracing analysis, however, requires accurate geometrical measurements and sophisticated modeling for each specific location. A MIMO testbed is ideal for quickly obtaining accurate channel capacity information.

[12345678910111213141516171819202122]

Authors’ Affiliations

(1)
Department of Electrical and Computer Engineering, University of Alberta

References

  1. Mannion P: IEEE pushes WLANs to 'nth' degree. Electronic Engineering Times July 2004, 8.Google Scholar
  2. Chizhik D, Rashid-Farrokhi F, Ling J, Lozano A: Effect of antenna separation on the capacity of BLAST in correlated channels. IEEE Communications Letters 2000, 4(11):337-339. 10.1109/4234.892194View ArticleGoogle Scholar
  3. Foschini GJ, Gans MJ: On limits of wireless communications in a fading environment when using multiple antennas. Wireless Personal Communications 1998, 6(3):311-335. 10.1023/A:1008889222784View ArticleGoogle Scholar
  4. Gesbert D, Bölcskei H, Gore DA, Paulraj AJ: Outdoor MIMO wireless channels: models and performance prediction. IEEE Transactions on Communications 2002, 50(12):1926-1934. 10.1109/TCOMM.2002.806555View ArticleGoogle Scholar
  5. Shiu D-S, Foschini GJ, Gans MJ, Kahn JM: Fading correlation and its effect on the capacity of multielement antenna systems. IEEE Transactions on Communications 2000, 48(3):502-513. 10.1109/26.837052View ArticleGoogle Scholar
  6. Wallace JW, Jeffs BD, Jensen MA: A real-time multiple antenna element testbed for MIMO algorithm development and assessment. Proceedings of IEEE Antennas and Propagation Society International Symposium, June 2004, Monterey, Calif, USA 2: 1716-1719.Google Scholar
  7. Murphy P, Lou F, Sabharwal A, Frantz JP: An FPGA based rapid prototyping platform for MIMO systems. Proceedings of 37th Asilomar Conference on Signals, Systems and Computers, November 2003, Pacific Grove, Calif, USA 1: 900-904.Google Scholar
  8. Horseman T, Webber J, Abdul-Aziz MK, et al.: A testbed for evaluation of innovative turbo MIMO-OFDM architectures. Proceedings of 5th European Personal Mobile Communications Conference (EPMCC '03), April 2003, Glasgow, Scotland, UK 453-457.Google Scholar
  9. Guidelines for Evaluation of Radio Transmission Technologies for IMT-2000 Recommendation ITU-R M.1225, 1997Google Scholar
  10. Cover TM, Thomas JA: Elements of Information Theory. John Wiley & Sons, New York, NY, USA; 1991.View ArticleMATHGoogle Scholar
  11. Telatar IE: Capacity of multi-antenna Gaussian channels. European Transactions on Telecommunications 1999, 10(6):585-595. 10.1002/ett.4460100604View ArticleGoogle Scholar
  12. Horn RA, Johnson CR: Matrix Analysis. Cambridge University Press, New York, NY, USA; 1990.MATHGoogle Scholar
  13. Gallager RG: Information Theory and Reliable Communication. John Wiley & Sons, New York, NY, USA; 1968.MATHGoogle Scholar
  14. Proakis JG: Digital Communications. 4th edition. McGraw-Hill, New York, NY, USA; 2001.MATHGoogle Scholar
  15. Hang R, Schlegel C, Krzymien WA, Goud P Jr.: A robust timing recovery algorithm for spread-spectrum packet radio systems. Proceedings of 16th International Conference on Wireless Communications (Wireless '04), July 2004, Calgary, Alberta, Canada 446-463.Google Scholar
  16. Kocev I, Kiefer T: Implementation and capacity potential verification of multiple antenna transmission systems, Master's thesis. University of Applied Sciences Offenburg, Offenburg, Germany; September 2004.Google Scholar
  17. Porrat D, Kyritsi P, Cox DC: MIMO capacity in hallways and adjacent rooms. Proceedings of IEEE Global Telecommunications Conference (GLOBECOM '02), November 2002, Taipei, Taiwan 2: 1930-1934.Google Scholar
  18. Honcharenko W, Bertoni HL: Transmission and reflection characteristics at concrete block walls in the UHF bands proposed for future PCS. IEEE Transactions on Antennas and Propagation 1994, 42(2):232-239. 10.1109/8.277217View ArticleGoogle Scholar
  19. Jordan EC, Balmain KG: Electromagnetic Waves and Radiating Systems. 2nd edition. Prentice-Hall, Englewood Cliffs, NJ, USA; 1968.Google Scholar
  20. Martone M: Multiantenna Digital Radio Transmission. 1st edition. Artech House, Norwood, Mass, USA; 2002.Google Scholar
  21. Swindlehurst AL, German G, Wallace J, Jensen M: Experimental measurements of capacity for MIMO indoor wireless channels. Proceedings of IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications (SPAWC '01), March 2001, Taoyuan, Taiwan 30-33.Google Scholar
  22. Goud P Jr., Schlegel C, Hang R, et al.: MIMO channel measurements for an indoor office environment. Proceedings of IEEE Wireless Conference, July 2003, Calgary, Alberta, Canada 423-427.Google Scholar

Copyright

© Goud Jr et al. 2006