Research on the wireless channel statistical characteristics of high-speed railway based on big data

The wireless channel characteristics of high-speed railway is a key issue to ensure the safety and reliability of high-speed train. Due to the variable external environment during train running, the model and optimization of wireless channel in theory can hardly meet the demand in reality. A Vehicle Electromagnetic Environment Monitoring System developed by Electromagnetic Compatibility Laboratory of Beijing JiaoTong University has been working on testing the high-speed train for many years. A large of testing data are obtained when train control system transmits signals. The big data theory and technique can mine the characteristic parameters of high-speed wireless channel from empirical data effectively, which could provide reasonable solution to optimize the high-speed wireless communication.