Influence of Polarization on Keyhole Probability on a MIMO-OFDM Train-to-Wayside System on Tunnels

Author

Moreno Garcia-Loygorri, Juan ; De Haro, Leandro ; Rodriguez, Carlos ; Cuellar, Luis ; Riera, Jose Manuel

Author_Institution

Eng. Dept., Metro de Madrid S.A., Madrid, Spain

Volume

14

fYear

2015

fDate

7/7/1905 12:00:00 AM

Firstpage

1798

Lastpage

1801

Abstract

This letter presents a deep insight on a real implementation of a train-to-wayside broadband radio on subway tunnels that makes use of a 2 ×2 MIMO-OFDM setup. A keyhole is a phenomenon that usually happens in tunnels and that seriously degrades channel´s capacity, even if both transmitter and receiver antennas are uncorrelated. The main purpose of this letter is to study in detail the influence of the polarization in the probability of having a keyhole on a MIMO-OFDM train-to-wayside communication system on a tunnel. MIMO keyholes are studied in four different polarization setups, six different tunnels cross-sections and, finally, capacity results are provided.

Keywords

MIMO communication; OFDM modulation; receiving antennas; transmitting antennas; tunnels; MIMO-OFDM train-to-wayside system; channel capacity; keyhole probability; polarization influence; receiver antennas; subway tunnels; train-to-wayside broadband radio; transmitter antennas; Antenna measurements; Channel capacity; MIMO; OFDM; Polarization; Railway communication; Keyholes; MIMO; OFDM; polarization; propagation; railways; subway tunnels; train-to-wayside communications;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2424321

Filename

7089212