MIMO-UWB Channel Characterization Within an Underground Mine Gallery

Multiple input multiple output-ultrawide band (MIMO-UWB) systems are experimentally evaluated for underground mine high-speed radio communications. Measurement campaigns using two different antenna configurations have been made in an underground gold mine. Furthermore, two scenarios, which are the line of sight (LoS) and the non-LoS (NLoS), i.e., taking into account the mining machinery effect, are distinguished and studied separately. In fact, the channel is characterized in terms of coherence bandwidth, path loss, shadowing, channel correlation, and capacity. Results reveal how antenna array configuration affects main channel parameters and suggest that mining machinery presence substantially affects both received power and time dispersion parameters within the underground mine and should, therefore, be considered when assessing the performance of in-gallery wireless systems. Moreover, it is shown that the MIMO-UWB takes benefit of the large spreading bandwidth and the multipath propagation environment to increase the channel capacity.

[1]  R. Murch,et al.  Isolation Enhancement Between Two Closely Packed Antennas , 2008, IEEE Transactions on Antennas and Propagation.

[2]  Huaping Liu,et al.  Error performance of pulse-based ultra-wideband MIMO systems over indoor wireless channels , 2005, IEEE Transactions on Wireless Communications.

[3]  Jose Maria Molina Garcia Pardo,et al.  Wide-band measurements and characterization at 2.1 GHz while entering in a small tunnel , 2004, IEEE Transactions on Vehicular Technology.

[4]  Feng Zheng,et al.  An Overview of Ultra-Wide-Band Systems With MIMO , 2009, Proceedings of the IEEE.

[5]  Sailing He,et al.  MIMO antenna system of two closely-positioned PIFAs with high isolation , 2009 .

[6]  Concepcion Garcia-Pardo,et al.  Polarimetric analysis of the MIMO-UWB channel in laboratories , 2011, Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP).

[7]  Rohit U. Nabar,et al.  Introduction to Space-Time Wireless Communications , 2003 .

[8]  Wasim Q. Malik Spatial correlation in ultrawideband channels , 2008, IEEE Transactions on Wireless Communications.

[9]  Andreas F. Molisch,et al.  Ultrawideband propagation channels-theory, measurement, and modeling , 2005, IEEE Transactions on Vehicular Technology.

[10]  Akram Hammoudeh,et al.  Frequency domain characterization of LoS nonfading indoor wireless LAN channel employing frequency and polarization diversity in the 63.4-65.4 GHz band , 2004, IEEE Transactions on Vehicular Technology.

[11]  J.-M. Molina-Garcia-Pardo,et al.  Polarized Indoor MIMO Channel Measurements at 2.45 GHz , 2008, IEEE Transactions on Antennas and Propagation.

[12]  L. Talbi,et al.  Experimental Characterization of an UWB Propagation Channel in Underground Mines , 2012, IEEE Transactions on Antennas and Propagation.

[13]  Dominic C. O'Brien,et al.  Receive antenna selection for MIMO systems over correlated fading channels , 2009, IEEE Transactions on Wireless Communications.

[14]  P. Degauque,et al.  Propagation in wide tunnels at 2 GHz: a statistical analysis , 1998 .

[15]  David J. Edwards,et al.  Simple correlated channel model for ultrawideband multiple-input multiple-output systems , 2007 .

[16]  M. Liénard,et al.  On the Possibility of Interpreting Field Variations and Polarization in Arched Tunnels Using a Model for Propagation in Rectangular or Circular Tunnels , 2008, IEEE Transactions on Antennas and Propagation.

[17]  F. Horlin,et al.  A Comprehensive Channel Model for UWB Multisensor Multiantenna Body Area Networks , 2010, IEEE Transactions on Antennas and Propagation.

[18]  H. El-Sallabi,et al.  Effect of Mutual Coupling on Capacity of MIMO Wireless Channels in High SNR Scenario , 2006 .

[19]  A. Fathy,et al.  DESIGN OF COMPACT VIVALDI ANTENNA ARRAYS FOR UWB SEE THROUGH WALL APPLICATIONS , 2008 .

[20]  A. G. Emslie,et al.  Theory of the propagation of UHF radio waves in coal mine tunnels , 1975 .

[21]  T. Kaiser,et al.  A Signal Processing Framework for MIMO UWB Channels with Real Antennas in Real Environments , 2007, 2007 IEEE International Conference on Ultra-Wideband.

[22]  S. Chiu,et al.  Effect of Human Presence on UWB Radiowave Propagation Within the Passenger Cabin of a Midsize Airliner , 2010, IEEE Transactions on Antennas and Propagation.

[23]  David J. Edwards,et al.  Measured MIMO Capacity and Diversity Gain With Spatial and Polar Arrays in Ultrawideband Channels , 2007, IEEE Transactions on Communications.

[24]  M. Wada,et al.  Radio propagation characteristics in subway platform and tunnel in 2.5 GHz band , 1995, Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications.

[25]  Wasim Q. Malik,et al.  MIMO capacity convergence in frequency-selective channels , 2009, IEEE Transactions on Communications.

[26]  Oliver Klemp Performance considerations for UWB MIMO antennas with multimode pattern diversity , 2009, 2009 3rd European Conference on Antennas and Propagation.

[27]  Theodore S. Rappaport,et al.  Wireless Communications: Principles and Practice (2nd Edition) by , 2012 .

[28]  David J. Edwards,et al.  Performance Analysis of Ultra-Wideband Spatial MIMO Communications Systems , 2005 .