JOURNAL OF COMMUNICATIONS (JCM)
ISSN : 1796-2021
Volume : 4 Issue : 4 Date : May 2009
Modeling and Understanding MIMO Propagation in Tunnels
Jose-Maria Molina-Garcia-Pardo, Martine Lienard, Paul Stefanut, and Pierre Degauque
Full Text: PDF (462 KB)
This paper first presents an application of the modal theory for interpreting experimental results of
the electromagnetic field variation along a tunnel. The transmitting frequency is assumed to be high
enough so that the tunnel behaves as an oversized waveguide. Then, for a Multiple-Input
Multiple-Output channel, theoretical results of the channel capacity are given. To explain the
decrease of the capacity at large distance from the transmitter, even by assuming a constant signal
to noise ratio, an approach based on the calculation of the eigenvalues of the transfer matrix in a
reference scenario is described.
MIMO, propagation, information theory, modal theory, measurements.