Abstract Extended of Novel Method for broadcasting Multiples Emergency Alert and Alarm Using ISDBT Digital Terrestrial Television In the Digital Terrestrial Television System ISDBT (Integrated Services Digital Broadcasting Terrestrial), it is specified how to send emergency information by the Emergency Descriptor EWBS (Emergency Warning Broadcast System) of Table PMT (Program Map Table); The emergency information is restricted to 1 bit with status of (activationNo activation) and the area code that determines the geographic location where the alert or alarm will be activated..The present paper proposes a novel method to send information of alerts and emergency alarms contemplating multiple events and complementary information, this is achieved by proposing a data protocol that will be responsible for bringing complementary information to the existing one. A new table is defined within the Transport Stream MPEG with a data structure that allows sending this additional information to indicate new types of emergencies.

A New Decoding Scheme of Emergency Alert Wakeup Bits in ATSC 3.0 This paper presents a new decoding scheme of emergency alert (EA) wakeup bits and evaluates its decoding performance in Advanced Television Systems Committee (ATSC) 3.0. Given that the minimal essential information in the bootstrap signal of ATSC 3.0 is not being changed often, the received signal can be further assumed to be binary modulated according to each wakeup bit. Therefore, the wakeup bits can be obtained independently regardless of other signaling information after the initial decoding that obtains entire information carried by the bootstrap. The simulation results show that the proposed decoding scheme of wakeup bits outperforms the conventional scheme which decodes the entire information carried by the bootstrap.