Title :
A Water-Filling Algorithm for Distributed MIMO Systems in Underground Tunnels
Author :
Emami-Forooshani, A. ; Michelson, D.G.
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of British Columbia, Vancouver, BC, Canada
Abstract :
Previous work has revealed that nonuniform power allocation schemes can significantly improve the performance of multiple-input-multiple-output (MIMO) systems in conventional environments. Here, we propose a water-filling scheme based on the multimode-waveguide model and customized for underground mines and tunnels that is suitable for use in conjunction with 4 ×4 distributed-MIMO systems. We show that employing this method significantly improves downlink capacity for different mobile locations in a typical underground environment. We have also studied the manner in which performance is affected as the separation between access-point antennas increases. These results provide useful guidance to deploy distributed and antenna-selection-based MIMO systems in underground environments.
Keywords :
MIMO communication; antenna arrays; mining; mobile antennas; mobile communication; resource allocation; telecommunication power management; tunnels; underground communication; access-point antennas; antenna-selection-based MIMO systems; distributed MIMO systems; downlink capacity; mobile locations; multimode-waveguide model; multiple-input-multiple-output systems; power allocation schemes; underground mines; underground tunnels; water-filling algorithm; water-filling scheme; Antenna arrays; Channel capacity; MIMO; Mobile communication; Resource management; Wireless communication; Distributed multiple-input–multiple-output (MIMO) systems; multimode waveguide model; underground tunnels; wireless propagation;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2375217
