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학술대회 Channel Estimation: Key Factor for LDM based Local Content Delivery on SFNs
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Jon Montalban, Eneko Iradier, Pablo Angueira, 박성익, 권선형, 허남호
International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) 2018, pp.1-6
18HR2200, 초고품질 UHD (UHQ) 전송 기술 개발, 허남호
Local Service Insertion (LSI) on Single Frequency Networks (SFN) is an attractive business case for broadcasters. Nevertheless, its practical implementation imposes a technical challenge from the spectral efficiency point of view, which has not been fully overcome yet. Recently, Layered Division Multiplexing (LDM) has been proposed as a solution to face this problem. LDM is one of the tools included in the ATSC 3.0 physical layer that enables an efficient multiple service delivery, making a simultaneous use of the whole time and frequency resources. Under certain configurations, LDM is a potential enabler for the LSI contents delivery, conveying the regional and local services on different layers. In this approach, the complexity and performance of the channel estimation procedures represent a key factor for the commercial success of receivers. Therefore, the main objective is to evaluate the the existing channel estimation procedures in a fully compliant ATSC 3.0 simulation set-up for the LDM-LSI scenario.
KSP 제안 키워드
ATSC 3.0, Business Case, Channel estimation(CE), Contents delivery, Different layers, Fully compliant, Key factor, Local Service Insertion, Local content delivery, Physical Layer, Practical implementation