Research on the Electric Characteristic of the Transmission Medium for the Train Communication Network of CRH3 EMUs

The present paper introduced architecture and characteristic of the train communication network(TCN) of CRH3.The electric characteristic of TCN was analyzed in detail.The distribution parameter model of TCN was deduced;Because of the problem of the near end crosstalk(NEXT) parameter was often unqualified,the simulation model of TCN based on the distribution parameter model was researched.Suggestions of optimization on the network cabling were given.