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학술지 Capacity Analysis and Improvement of LDM-Based Multiple-PLP Configurations in ATSC 3.0
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저자
김형석, 김정창, 박성익, 이재영, 권선형, 허남호
발행일
202106
출처
IEEE Transactions on Broadcasting, v.67 no.2, pp.450-462
ISSN
0018-9316
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TBC.2020.3044494
협약과제
21HH7400, 초고품질 UHD (UHQ) 전송 기술 개발, 허남호
초록
This article analyzes the capacities of various layered-division multiplexing (LDM)-based multiple physical layer pipe (M-PLP) configurations in Advanced Television Systems Committee (ATSC) 3.0. Further, this article proposes an extended multi-layer LDM that consists of a core layer and one or more enhanced layer(s) combined with different injection levels. The proposed multi-layer LDM can be combined with time-division multiplexing (TDM) and/or frequency division multiplexing (FDM) to multiplex more than two PLPs. This article provides the structures of a transmitter and receiver for the multi-layer LDM and various M-PLP configurations based on the proposed multi-layer LDM. In addition, by extending to a multi-layer LDM, the low rate low-density parity-check (LDPC) codes are proposed to improve the transmission efficiency of an extremely robust service with lower data rate, such as robust audio, in the core layer of the multi-layer LDM. Simulation results show that the M-PLP configurations based on more than two layers can obtain the improved reception performance compared to the M-PLP configurations based on only two layers supported by the PHY standard in ATSC 3.0. However, since the performance degradation of layered time-division multiplexing (LTDM) with fewer layers is not significant compared to multi-layer LDM, LTDM can be a good solution to efficiently transmit M-PLPs.
KSP 제안 키워드
ATSC 3.0, Advanced television systems committee(ATSC), Capacity analysis, Frequency division multiplexing, Low density parity check (LDPC) code, Low-rate, M-PLP, Time division multiplexing, Transmitter and receiver, data rate, multi-layer