Analysis And Research On Train-ground Communication Error Symbol Based On GSM-R

As we enter the era of high-speed trains, in order to ensure the safe operation of high-speed train this is a challenge to train control equipment. There is a need of two-way information transmission between the train and the ground. GSM-R system is a typical control system for the car out to a two-way wireless communication system, its interference with the interference problem is one of them.GSM-R system, there is a lot of interference, from the GSM system and CDMA system and interference with other communications systems, including fixed-frequency interference and unpredictable signal interference, it can be divided into the same channel interference, adjacent channel interference and inter-modulation interference. In the current study, the interference of the communication system focused largely on GSM-R system by the GSM system and CDMA systems, GSM-R is also of interference within the system. Increase speed railway train operation control method is also a big challenge, when the train speed is higher than 140km/h, the train's Bow arc discharge power high-frequency electromagnetic waves generated by impact of increasing the communication system will affect the GSM-R system reliability.In this paper, the air discharge as the basic theory of the disconnection when the causes of arc, and arc excitation of high frequency electromagnetic wave analysis, simulation train running high-frequency noise generated in the process, on this basis, the establishment of a GSM-R system, the interference model. In order to reduce the bow net arc GSM-R system to produce on disturbance, this paper discusses a GSM-R system in the way of electromagnetic interference. As the bow position and GSM-R system of relatively fixed antenna position, bow nets arc discharge excited high-frequency electromagnetic waves can be seen as a directional interference, adaptive filter paper the idea of the digital beam forming method, electromagnetic waves will interference suppression method of the direction of zero high-frequency electromagnetic wave, the method is verified by simulation can inhibit the orientation of the bow net arc generated high frequency electromagnetic waves.