Transmitter Identification With Watermark Signal in DVB-H Signal Frequency Network

Transmitter identification (TxID) technique is used to diagnose the operating status of radio transmitters in DTV distributed transmission network. In this paper, a new kind of TxID method for DVB-H SFN(Single Frequency Network)system is proposed. We embed a signal (e.g. watermark) in the DVB-H signal to form the composite signal. The embedded signal will not alternate the system spectral efficiency. By watermarking theory, we demonstrate the required embedded level for watermarking signal to achieve a given bit error probability in different circumstance. Simulation results show that the receiver can distinguish the watermarking signal with low embedding strength even in wireless situation. At that embedding strength, BER performance degradation for the receiver can be ignored.