Abstract: This paper stutied the MIMO roadway geometry modeling technology. On the basis of electromagnetic wave in mine roadway environment characteristics of the establishment of the MIMO channel GBDB scattering model and direct channel model, the model is derived for the correlation function, and the selection of transmitter and receiver horizontal angular power spectrum is Laplasse distribution function of power spectrum.The specific effects of tunnel environment MIMO antenna placement angle, antenna spacing, tunnel length, Les factor, angle spread and the average angle on the spatial correlation function were simulated. hhe simulation results show that in the environment of tunnel antenna placement angle effect on correlation coefficient is larger, and antenna spacing for a larger value can get a lesser correlation; but correlation coefficient is also affected by the antenna spacing and tunnel length and angle expansion and so on,and the ground is correlated with greater than.

Key words: Tunnel,Gcometric model,Radio signals,Multiplc input multiple output