The invention discloses an ultra-high-speed railway wireless optical communication method and device, and the method comprises the steps: achieving a linear light source with uniform optical density and good linearity through a Powell lens; during downlink communication, by a plurality of adjacent tunnel transmitters on a vacuum tunnel, transmitting the same optical signal at the same time at thesame frequency through the Powell lens to form a single-frequency network so as to ensure that an on-board receiver of each train can receive the optical signal of at least one tunnel transmitter; during uplink communication, by a train transmitting machine of the ultra-high-speed train, forming one or more beams of light source signals through the Powell lens so as to ensure that at least one tunnel receiver at the top of the tunnel can receive light signals of a train transmitter at any moment. Therefore, radio frequency communication is replaced by optical communication, Doppler spread andfrequent channel switching generated when the train moves at an ultra-high speed are effectively avoided, and therefore ultra-high-speed, high-reliability and low-delay communication between the trainand the ground can be achieved.

    本发明公开了一种超高速铁路无线光通信方法及装置,其中,该方法包括:利用鲍威尔透镜,实现光密度均匀、直线性好的线光源;下行通信时,真空隧道上相邻的多个隧道发射机通过鲍威尔透镜同时同频发射相同光信号,形成单频网,确保每列列车的车上接收机至少能接收到一个隧道发射机的光信号;上行通信时,超高速列车的列车发射机器通过鲍威尔透镜形成一束或多束光线光源信号,确保任何时刻隧道顶部至少有一个隧道接收机能接收列车发射机的光信号。由此,利用光通信代替射频通信,有效避免了列车超高速移动时产生的多普勒扩展以及频繁的信道切换,从而可以实现车地之间超高速、高可靠、低延时的通信。


    Access

    Download


    Export, share and cite



    Title :

    Ultra-high-speed railway wireless optical communication method and device


    Additional title:

    超高速铁路无线光通信方法及装置


    Contributors:
    YANG FANG (author) / HUANG XUAN (author) / SONG JIAN (author) / PAN CHANGYONG (author)

    Publication date :

    2020-08-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / H04B TRANSMISSION , Übertragung



    Ultra high speed test CRH (China Railway High-Speed) train bogie

    WANG XINGYU / LI GUODONG / ZHOU DIANMAI | European Patent Office | 2016

    Free access

    Design of High-Speed Railway Wireless Communication System Based on Simulink

    Shi, Huajie / Xiao, Manlin / Zheng, Qi | TIBKAT | 2021


    Wireless communication system and method for ultra-high-speed maglev train

    ZHANG YANQING / KIM SUNG-IL / PENG YINGHAN et al. | European Patent Office | 2023

    Free access

    Spatial modulation in high speed railway communication

    Li, Zhao / Wang, Fanggang / Zhong, Zhangdui | IEEE | 2013


    COMMUNICATION METHOD AND DEVICE FOR ULTRA-HIGH-SPEED VEHICLE

    PARK SOON GI | European Patent Office | 2020

    Free access