Abstract:

The paper explains the IEEE 802.11g standard which is widely applied in CommunicationBased Train Control system.Then for the features of IEEE 802.11g standard,a function of adjacent channel interference is introduced as a quantitative research method of adjacent channel interference of the system.The quality of the accepted signal between different channel schemes is analyzed and calculated by simulating a practical scenario,leading to the conclusion that greater channel spacing effectively improves the quality of received signals and system throughput.

Key words: communication based train control system;OFDM;adjacent channel interference;interference function