HD-CCTV System Design with Extended Transmission Distance using Digital Modulation
디지털 변조를 적용하여 전송거리가 확장된 HD-CCTV 시스템 설계

Sungwon Hong, Dong Seog Han
2016 Journal of Broadcast Engineering  
In this paper, a digital closed-circuit television (CCTV) transmission system called the extended reach high definition serial digital interface (ER-SDI) is proposed to increase the transmission distance while preserving the quality using digital modulation. The current standard of HD-serial digital interface (HD-SDI) has the maximum transmission distance of 200 m. Recently, one system which transforms the digital signal to an analog signal and modulates color signal to extend the transmission
more » ... istance is proposed. Another system which uses IP network is also proposed. However, the former system has a disadvantage of video quality and the latter system has high latency. The proposed ER-SDI is designed to extend the transmission distance of 518 m by adopting multilevel constellations and a channel code for a data rate of 1.485 Gbps. The maximum transmission distance of the proposed system is calculated using the specification of HD-SDI and the experiment result under coaxial cable environment.
doi:10.5909/jbe.2016.21.6.986 fatcat:4kxwhh2lv5bdvkzb3tes3u24di