Abstract
Influenced by Wi-Fi signal interference, Shenzhen subway is forced to stop frequently, which has caused enormous safety hazard. This paper proposes a method to test the interference transferred from Wi-Fi signals to the Communication Based Train Control (CBTC) systems, then the testing data are collected and analysed. The test is aim to two signal transmission modes: free wave and leaky cable. The test result shows that the signal transmission mode of leaky cable is more reliable, while the transmission mode of free wave has the worse anti-interference capability to Wi-Fi signals. Particularly, it is an effective way to apply for specific frequency bands, which will make a contribution to reducing the interference effect on the CBTC systems caused by Wi-Fi signals.
Published Version
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