RAILWAY CAR RADIO COMMUNICATION SYSTEM, GROUND RADIO COMMUNICATION DEVICE, ON-VEHICLE RADIO COMMUNICATION DEVICE, AND RADIO COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a railway car radio communication system that includes means to increase communication capacity and achieve large-capacity communication when line conditions are good while certainly securing a communication path capable of reliably communicating highly-important data even in an environment in which the line conditions are bad such as at the time of bad weather.;SOLUTION: A ground radio communication device 70 and an on-vehicle radio communication device 80 include a transmission device comprising: a plurality of modulation units 18 that modulate carriers at respective different frequencies with transmission data input according to an indicated modulation scheme, generate modulation signals including header information indicating the used modulation scheme, and can control the modulation scheme; and a transmission side upper-level device interface unit 17 for receiving, from an upper-level device, the transmission data, modulation unit use information to control use or nonuse of the modulation units 18, and modulation scheme information to designate modulation schemes of the respective modulation units 18.;SELECTED DRAWING: Figure 7;COPYRIGHT: (C)2018,JPO&INPIT