Application of Dual-Polarization Transmission for Wireless Distribution Using LDM in ATSC 3.0

According to marketing research, consumers nowadays spend more time in average on their mobile devices than TV. Such a rapid increase on the use of mobile devices shifts the priority capabilities of future digital TV broadcasting system from delivering services for fixed receivers to mobile broadcasting, including both TV signal and data. ATSC 3.0 was designed with advanced video/audio coding and physical layer technologies to meet the stringent demands of service coverage and quality of service. To improve the mobile service coverage performance for highly populated indoor and closed areas (airports, shopping malls, stadiums, etc.), it becomes necessary to deploy single-frequency-network (SFN) type low-power gap fillers, which can provide significantly higher signal strength to the indoor mobile devices. Conventionally, such SFN gap fillers require either fiber or dedicated microwave as distribution link, which could be prohibitively expensive when the number of gap fillers is large.