In face of the increasing serious traffic problems in the cities, rail transit with efficient, safe, rapid features has developed rapidly. As the development and integration of computer technology, communication technology and control technology, the CBTC system (Communication Based Train Control)has been widely applied.The research of safe and reliable train-ground communication is the basic issue of the CBTC system.By analysing and researching the typcial CBTC train-ground communication technology,a spread spectrum wireless communication based train-ground communication system solution is put forward and a direct sequence spread spectrum radio station is implemented in this thesis.
