Large-Cell Wireless Train Radio Communications Employing Narrowband Multiple Single Carrier Modulation Schemes for High-Speed Railways

Abstract

This paper proposes train radio communications for high-speed railways to achieve the following: 1) higher frequency efficiency; 2) faster mobile speed; 3) larger cell radius. Compared with Global System for Mobile Communications-Railway (GSM-R) and Terrestrial Trunked Radio (TETRA) in European train radio communications, although the conventional Japanese train radio communications have excellent frequency efficiency and communication quality, they have lower mobile speed and smaller cell radius. This paper proposes train radio communications that can achieve the same levels as GSM-R and TETRA for the items 2) and 3) while maintaining the advantages of the conventional Japanese systems for the item 1). Finally, computer simulation results show that the proposed systems can extend the cell radius of the base station to be comparable to those of GSM - R and TETRA at a mobile speed of 300km/h.