Skip to main content

A High-Speed Four-Transmitter Four-Receiver MIMO OFDM Testbed: Experimental Results and Analyses


By adopting multiple-input multiple-output (MIMO) and orthogonal frequency-division multiplexing (OFDM) technologies, indoor wireless systems could reach data rates up to several hundreds of Mbits/s and achieve spectral efficiencies of several tens of bits/Hz/s, which are unattainable for conventional single-input single-output systems. The enhancements of data rate and spectral efficiency come from the fact that MIMO and OFDM schemes are indeed parallel transmission technologies in the space and frequency domains, respectively. To validate the functionality and feasibility of MIMO and OFDM technologies, we set up a four-transmitter four-receiver OFDM testbed in a typical indoor environment, which achieves a peak data rate of 525 Mbits/s and a spectral efficiency of 19.2 bits/Hz/s. The performances including MIMO channel characteristics, bit-error rate against signal-to-noise ratio curves, the impairments of carrier frequency offset and channel estimation inaccuracy, and an asymmetric MIMO scheme are reported and analyzed in this paper.


  1. Golden GD, Foschini CJ, Valenzuela RA, Wolniansky PW: Detection algorithm and initial laboratory results using V-BLAST space-time communication architecture. Electronics Letters 1999, 35(1):14–16. 10.1049/el:19990058

    Article  Google Scholar 

  2. Xiang W, Waters D, Pratt TG, Barry J, Walkenhorst B: Implementation and experimental results of a three-transmitter three-receiver OFDM/BLAST testbed. IEEE Communications Magazine 2004, 42(12):88–95.

    Article  Google Scholar 

  3. Xiang W, Pratt T, Wang X: A software radio testbed for two-transmitter two-receiver space-time coding OFDM wireless LAN. IEEE Communications Magazine 2004, 42(6):S20–S28.

    Article  Google Scholar 

  4. Sampath H, Talwar S, Tellado J, Erceg V, Paulraj A: A fourth-generation MIMO-OFDM broadband wireless system: design, performance, and field trial results. IEEE Communications Magazine 2002, 40(9):143–149. 10.1109/MCOM.2002.1031841

    Article  Google Scholar 

  5. Piechocki RJ, Fletcher PN, Nix AR, Canagarajah CN, McGeehan JP: Performance evaluation of BLAST-OFDM enhanced Hiperlan/2 using simulated and measured channel data. Electronics Letters 2001, 37(18):1137–1139. 10.1049/el:20010767

    Article  Google Scholar 

  6. Batariere MD, Kepler JF, Krauss TP, Mukthavaram S, Porter JW, Vook FW: An experimental OFDM system for broadband mobile communications. Proceedings of 54th IEEE Vehicular Technology Conference (VTC '01), October 2001, Atlantic City, NJ, USA 4: 1947–1951.

    Google Scholar 

  7. 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.

    Article  Google Scholar 

  8. IEEE P802.16a/D4-2002 : Part 16: Air interface for fixed broadband wireless access systems. 2002.

  9. Schumacher L: WLAN MIMO Channel Matlab Program. download information:

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to Weidong Xiang.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Xiang, W., Richardson, P., Walkenhorst, B. et al. A High-Speed Four-Transmitter Four-Receiver MIMO OFDM Testbed: Experimental Results and Analyses. EURASIP J. Adv. Signal Process. 2006, 045401 (2006).

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: