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Capacity Analysis and Improvement of LDM-Based Multiple-PLP Configurations in ATSC 3.0
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- Authors
- Hyeongseok Kim, Jeongchang Kim, Sung-Ik Park, Jae-Young Lee, Sunhyoung Kwon, Namho Hur
- Issue Date
- 2021-06
- Citation
- IEEE Transactions on Broadcasting, v.67, no.2, pp.450-462
- ISSN
- 0018-9316
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- ATSC 3.0, Advanced television systems committee(ATSC), Capacity analysis, Frequency division multiplexing, Low-density parity-check (LDPC) codes, Low-rate, M-PLP, Time division multiplexing, Transmitter and receiver, data rate, multi-layer