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차세대 지상파 DTV 전송방식 시스템을 위한 Enhanced-xVSB 개발
김성훈(Sung-Hoon Kim),지금란(Kum-Ran Ji),이재영(Jae-Youn Lee),김승원(Seung-Won Kim),이수인(Soo-In Lee),김창중(Chang-Joong Kim),이호경(Ho-Kyoung Lee) 한국방송·미디어공학회 2004 한국방송공학회 학술발표대회 논문집 Vol.2004 No.-
This paper described an Enhanced-xVSB system for improving mobile/pedestrian reception performance to the ATSC DTV 8-VSB transmission standard. E-xVSB system can transmit a mixture of normal (8-VSB) stream and enhanced (robust) stream. The robust stream has a higher thresh이d of visibility (TOV) compared to the standard stream, and legacy receivers ignore the robust packets. Thus, Enhanced-xVSB system is fully backward compatible with a current ATSC standard. For mobile and portable reception support, E-xVSB system adopts a reduced constellation method as well as enhanced trellis-coded modulation scheme. E-xVSB system supports a variety of enhanced modulation schemes: Pseudo-2VSB, Enhanced-4VSB, modified Enhanced-8VSB and Hybrid-VSB. Proposed E-xVSB system performs well under serious dynamic multipath reception environment.
지상파 DTV 수신 성능 개선을 위한 이중 스트림 기술 분석
지금란,김대진 전남대학교 전자통신기술연구소 2002 전자통신기술논문지 Vol.5 No.1
This paper describes dual stream techniques which are proposed for enhancement of reception performance to ATSC T3/S9 and simulation implement to compare performance of normal stream using Robust 8-VSB with performance of normal stream using Pseudo 2-VSB at equalizer. As a result of simulation, robust data of Robust 8-VSB aid reception of normal data at all channels used simulation but robust data of Pseudo 2-VSB aid reception of normal data at serious multipath channel.