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

Abstract

This paper proposes train radio communications for high-speed railways to achieve the following three items compared with the conventional systems: 1) higher frequency efficiency; 2) faster mobile speed; 3) larger cell radius. Comparing 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 weakness on mobile speed and cell radius. This paper proposes train radio communications, which can achieve the same levels as GSM-R and TETRA for the items 2), and 3), maintaining the advantages of the conventional Japanese systems for the item 1). Finally, computer simulation results show the proposed systems can extend the cell radius of the base station comparable to GSM-R and TETRA at mobile speed of 300km/h while maintaining the same level of communication quality and frequency efficiency as the conventional Japanese train radio communications.