대용량 콘텐츠에 대한 관심이 증가함에 따라 지상파 방송의 전송용량을 증가시키기 위한 다양한 노력들이 시도되고 있다. 미국의 표준화 단체인 Advance Television Systems Committee(ATSC)에서는 초고화질의 데이터 전송이 가능하고 동시에 HD급 이동방송 서비스가 가능한 차세대 방송방식인 ATSC 3.0의 표준화 완료를 목표로 현재 막바지 작업을 진행하고 있다. 본고에서는 ATSC 3.0으로 불리는 ATSC 차세대 방송방식의 물리계층에 대한 표준화 동향과 ATSC 3.0 물리계층의 한 축을 담당하고 있는 프레임 동기를 위한 부트스트랩, Constellation 및 Layered Division Multiplexing(LDM) 기술에 대해 살펴보고, 물리계층의 획기적인 전송용량 증대 기법인 Multiple Input Multiple Output(MIMO) 기술에 대해 정리하고자 한다.
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J. Kim et. al, "Trends in Lightweight Kernel for Many core Based High-Performance Computing", Electronics and Telecommunications Trends. Vol. 32, No. 4, 2017, KOGL Type 4: Source Indication + Commercial Use Prohibition + Change Prohibition
J. Sim et.al, “the Fourth Industrial Revolution and ICT – IDX Strategy for leading the Fourth Industrial Revolution”, ETRI Insight, 2017, KOGL Type 4: Source Indication + Commercial Use Prohibition + Change Prohibition
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