MIMO Performances in Tunnel Environment: Interpretation from the Channel Characteristics

The objective of this contribution is to study the performances in terms of bit error rate, of space-time code algorithms applied to MIMO communication in tunnels. Indeed, the channel characteristics in a tunnel are quite different than those of urban or indoor environment, due to the guiding effect of the tunnel. Therefore, MIMO channel matrices have been measured in a straight tunnel, in a frequency band around 3GHz. Correlation between array elements and properties of the MIMO matrices are first studied as a function of the distance between the transmitter and the receiver. Then, owing to a software tool simulating the link, predicted values of bit error rate are given for VLAST, OSTBC and QSTBC algorithms applied to a MIMO configuration with 2 or 4 array elements. Results are interpreted from the analysis of the channel properties.

Authors:

• C. Sanchis-Borras
• J. M. Molina-Garcia-Pardo
• P. Degauque
• M. Lienard

Keywords:

• MIMO
• propagation channel
• space-time algorithms
• tunnel.

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