Low-Complexity Decoding Algorithms for the LDM Core Layer at Fixed Receivers in ATSC 3.0

Cho, Sunghye; Hwang, Youngjun; Myung, Seho

doi:10.1109/tbc.2016.2606879

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…The modern ATSC 3.0 recommends the use of the LDM modulation technique. Therefore, several articles were published with studies concerning the capacity of LDM in ATSC 3.0 [39], memory use aspects for the LDM technique in the system [40], MIMO schemes utilization [41], field tests [42], studies about efficient schemes for decoding and LDPC application [43][44][45], performance analysis for mobile services [46], among others.…”

Section: Related Workmentioning

confidence: 99%

Implementation of a 3-layer LDM Broadcast System Backward-compatible with ISDB-TB

Rabaca¹,

Jerji²,

Akamine³

2021

RADIOENGINEERING

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This paper presents an implementation of a 3layer transmitter and receiver using Layer Division Multiplexing (LDM), in Software Defined Radio (SDR). The main idea of this work is to show another point of view of the traditional LDM technique that uses two layers. This proposal uses an attenuated intermediate layer, called Middle Layer (ML), between the highest power layer, called Upper Layer (UL), and the most attenuated layer, called Lower Layer (LL). The UL is fully compatible with the Integrated Services Digital Broadcasting Terrestrial -Version B (ISDB-T B ). The ML, with greater robustness, and LL, with higher capacity, use powerful channel coders, a custom frame size and an adapted bit interleaver. With the use of this modified LDM, it is possible to develop a system with different robustness levels between layers and with lower layers that complement each other, to achieve bit rates that allow for the deployment of High Definition Television (HDTV), in the UL, and Ultra High Definition Television (UHDTV), in the ML and LL. In addition, a system was also implemented with three layers, but with the ML with higher capacity and the LL with greater robustness. The performance of the 3-layer system was compared with the 2-layer LDM technique and there was an improvement in the system modularity, without a decrease in the bit rate.

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Section: Related Workmentioning

confidence: 99%

Implementation of a 3-layer LDM Broadcast System Backward-compatible with ISDB-TB

Rabaca¹,

Jerji²,

Akamine³

2021

RADIOENGINEERING

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“…Compared to existing standards, ATSC 3.0 standard can provide better flexibility, more robustness, and higher spectrum efficiency [ 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. A key physical layer technique in ATSC 3.0 is the so-called layer division multiplexing (LDM).…”

Section: Introductionmentioning

confidence: 99%

Enhanced LDM for Next-Generation Digital Broadcasting Transmission

Deng

Bian

2021

Sensors

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In the traditional layered division multiplexing (LDM) system, by simply adjusting the injection level, the reception performance of the core layer (CL) mobile services will be decreased significantly, resulting in the deterioration of system coverage performance. Thus, it is necessary to improve the performance of the enhanced layer (EL) service reception without affecting the reception threshold of CL service. To achieve this, in this paper, an enhanced LDM (En-LDM) scheme that supports multi-service transmission is proposed for the next-generation broadcasting network. In this scheme, at the transmitter end, part of the low-density parity-check (LDPC) coded data stream of fixed service conveyed in the EL will be extracted out through puncturing, and then, it will be transmitted over the CL of the LDM signal along with the original CL data in a frequency domain multiplexing (FDM) manner. At the receiving end, the punctured data of the EL fixed service will be recovered with a higher signal-to-noise ratio (SNR). Compared to the traditional LDM scheme, the proposed En-LDM scheme can significantly improve the reception performance of fixed services without decreasing the SNR threshold of mobile services. Moreover, the En-LDM can achieve a higher channel capacity than that of the traditional LDM for both the fixed services and the overall services. The superiority of the proposed En-LDM scheme over the traditional LDM scheme is validated by the simulation under the additive white Gaussian noise (AWGN) and fading channels.

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Analysis of Channel Capacity for Three-layer Signals in Layered Division Multiplexing System

Kim

Kwon

Kim

et al. 2019

2019 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB)

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Low-Complexity Decoding Algorithms for the LDM Core Layer at Fixed Receivers in ATSC 3.0

Cited by 5 publications

References 18 publications

Implementation of a 3-layer LDM Broadcast System Backward-compatible with ISDB-TB

Implementation of a 3-layer LDM Broadcast System Backward-compatible with ISDB-TB

Enhanced LDM for Next-Generation Digital Broadcasting Transmission

Analysis of Channel Capacity for Three-layer Signals in Layered Division Multiplexing System

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