DEVICE AND METHOD FOR DETECTING A COMMUNICATION CHANNEL

摘要

The present invention provides a method and a device for detecting a communication channel in whose frequency band (?f ) radio signals are transmitted by different radio signal sources inside a cabin. In this case a wide band antenna (2) receives the radio signals transmitted inside the cabin. Different demodulators (8) are provided, each of which demodulate the radio signals received by the wide band antenna (2) within an associated frequency range (?F) of the demodulator (8). A configuration logic (4) establishes whether, in a frequency band (?f) within a demodulated frequency range (?F), radio signals are being transmitted simultaneously by different radio signal sources, in the case of impermissible signal transmissions of a radio signal source, e.g. when a non-safety-relevant system transmits signals in the same frequency band (?f ) of a safety- relevant system in the same frequency bands ?f of a safety-relevant system, the non-safety-relevant system is reconfigured by the configuration logic and an alarm or warning signal is generated as an indication of the impermissible condition.