Rail transit wireless communication method and system

A rail transit wireless communication method comprises the following steps of connecting a wireless communication system supporting a multi-input multi-output communication mode; and transmitting thewireless communication system supporting the multi-input multi-output communication mode through a horizontally polarized first leaky cable and a vertically polarized second leaky cable. The inventionalso provides a rail transit wireless communication system. According to the rail transit wireless communication method and the rail transit wireless communication system, the two leakage cables usedas the wireless signal transmission mediums respectively adopt a horizontal polarization mode and a vertical polarization mode, so that the minimum distance between the leakage cables is reduced from4 times of wavelength to 2 times of wavelength; in addition, when the wireless signal is weaker, the effect of increasing the transmission rate can be achieved through an MIMO technology, so that thewhole rail transit line can