CHENG Ling-fei, YANG Meng, HE Yang, et al. Doppler spread of wireless channel in tunnel and its influence factors[J]. 2018, (9): 29-31. DOI: 10.13873/J.1000-9787(2018)09-0029-03.
Researching on Doppler spread of wireless channel in tunnel can improve communication performance of mine and transmission efficiency. Software simulation is used to research on influence of factors
such as movement speed of mobile platform
height of tunnel
width of tunnel
carrier frequency
tunnel shape
on Doppler spread of wireless channel in tunnel
on the basis of 3 D model. It comes to a conclusion that Doppler spread is proportional to movement speed
and it will have a great change when the car close to the base station. Doppler spread is inversely proportional to the height of tunnel and the width of tunnel. Doppler spread is proportional to carrier frequency