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

Volume

14

fYear

2015

fDate

2015

Firstpage

595

Lastpage

597

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;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2375217

Filename

6977923