Research and Design for Train Sensor Network Train-to-Wayside Communication of Urban Rail Transit

摘要

This paper, based on the requirements of the development of urban rail train safety monitoring sensor network, gives the Alamouti Space Time Block Coding (STBC) train-wayside joint MIMO system of transmission scheme combined with the performance advantages of MIMO technology. Establish the wireless channel model of the train running under the environment of elevated and tunnels to evaluate and analyze the performance of MIMO system. It is proved that the channel capacity and transmission reliability of MIMO are better than the single-antenna space free wave transmission mode and leaky waveguide transmission mode, which are widely used. MIMO can improve the efficiency and reliability of train-to-wayside communication, ensuring the high efficiency and the safe operation of the trains.