Title :
Keyhole Estimation of an MIMO-OFDM Train-to-Wayside Communication System on Subway Tunnels
Author :
Moreno, Juan ; de Haro, Leandro ; Rodriguez, Carlos ; Cuellar, Luis ; Riera, Jose Manuel
Author_Institution :
Eng. Dept., Metro de Madrid S. A., Madrid, Spain
Abstract :
This letter presents a deep insight on a real implementation of a train-to-wayside radio on subway tunnels that makes use of a 2 × 2 multiple-input-multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) setup. The main purpose of this letter is to study in detail the keyhole phenomenon of an MIMO-OFDM train-to-wayside communication system on a tunnel. MIMO keyholes are studied in different tunnels sections, and capacity results are provided. Moreover, we introduce the first keyhole measurements on a railway tunnel. Finally, we follow a quantitative approach to estimate keyhole probabilities on each tunnel stretch and capacity outage curves.
Keywords :
MIMO communication; OFDM modulation; railway communication; tunnels; MIMO-OFDM train-to-wayside communication system; capacity outage curves; keyhole estimation; keyhole measurements; keyhole probability estimation; multiple-input-multiple-output orthogonal frequency-division multiplexing system; quantitative approach; railway tunnel; subway tunnels; train-to-wayside radio; tunnel stretch; Antenna arrays; Antenna measurements; Correlation; Digital video broadcasting; MIMO; Rail transportation; Wireless communication; Keyholes; multiple-input–multiple-output (MIMO); orthogonal frequency-division multiplexing (OFDM); propagation; railways; subway tunnels; train-to-wayside communications;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2356076
