[Paper] Determining Broadcaster Advised Emergency Wake-Up Signal with Switching Two Detection Methods and Observing Several TMCC Frames for Mobile ISDB-T Receivers

Abstract

When in an emergency, an ISDB-T (Integrated Services Digital Broadcasting-Terrestrial) broadcaster would send a special signal to wake-up their receivers. However, the mobile receivers would wrongly determine the wake-up signal due to the erroneous radio channel. The mobile receivers also need reducing the power consumption when in idle because they are generally battery-operated. In this paper, a method of reliably determining the wake-up signal while reducing the power consumption is proposed. The method uses switching two detection methods and determining the wake-up signal with a certain time observation. The evaluation is conducted in terms of the mutual information to be obtained from the receiver. The combination of the detection method and the determination method maximizes the mutual information.