Layered-Division Multiplexing: An Enabling Technology for Multicast/Broadcast Service Delivery in 5G

Zhang, Liang; Wu, Yiyan; Li, Wei; Salehian, Khalil; Lafleche, Sebastien; Wang, Xianbin; Park, Sung Ik; Kim, Heung Mook; Lee, Jae-Young; Hur, Namho; Angueira, Pablo; Montalbán, Jon

doi:10.1109/mcom.2018.1700657

Cited by 51 publications

(15 citation statements)

References 11 publications

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“…Ref. [ 17 ] discussed the application of LDM as an enabling technology for 5G and proved that the P2MP subsystem with LDM can deliver high-quality broadcast services using the broadband infrastructure. The basic principle of LDM is that the second layer of the data stream is superimposed to the original data layer to form a composite signal.…”

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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Section: Introductionmentioning

confidence: 99%

Enhanced LDM for Next-Generation Digital Broadcasting Transmission

Deng

Bian

2021

Sensors

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“…Regarding the multiresolution broadcast problem specifically, Layered Division Multiplexing (LDM) has been proposed for digital terrestrial broadcasting [11], [12]. The recent publication [13] provides a detailed study of the capacity advantage of LDM over orthogonal schemes for multi-tier (in our terminology: multiresolution) service delivery and mixed unicast-broadcast service delivery.…”

Section: Introductionmentioning

confidence: 99%

“…The main focus of [13], however, is not on fairness issues. On the other hand, [14] is closest in spirit to our work, in that it studies max-min fairness optimization in a NOMA downlink.…”

Section: Introductionmentioning

confidence: 99%

A Fairness–Throughput Tradeoff Perspective on NOMA Multiresolution Broadcasting

Pastore

Navarro

2019

IEEE Trans. on Broadcast.

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We propose an analytical framework for characterizing the tradeoff between fairness and throughput that arises in a cellular or satellite downlink when multicast information is encoded in two resolution levels (high vs. low priority information). Given a target fairness (measured in terms of the ratio between the information rates of low vs. high resolution stream), the operator seeks to optimize the modulation and coding schemes so as to maximize the average cell throughput. Viewing operating points as fairness-throughput pairs allows to meaningfully quantify and interpret the superiority of non-orthogonal (NOMA) techniques such as superposition coding against simple orthogonal time division. The optimal fairness-throughput tradeoff curve for superposition coding vs. time division is derived in the Gaussian setting. A practical implementation with 16-QAM constellations and multilevel coding is proposed and its tradeoff curve is numerically evaluated.

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“…With LDM, the 5G PTM service could be delivered in the CL, while multiple unicast services can be delivered in the EL. Results in [124], [125] shows that LDM achieves higher spectrum eciency than current TDM mode.…”

Section: Nom For 5th Generation (5g) Mobile Systemsmentioning

confidence: 96%

“…' 15). The potential application of LDM in the 5G PTM transmission is explored in [124], [125]. It is highlighted that LDM gains will become higher thanks to the multiple antenna technologies adopted in 5G.…”

Section: Nom For 5th Generation (5g) Mobile Systemsmentioning

confidence: 99%

Advanced Layered Divsion Multiplexing Technologies for Next-Gen Broadcast

Crevillén¹

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Since the beginning of the 21st century, terrestrial broadcasting systems have been blamed of an inecient use of the allocated spectrum. To increase the spectral eciency, digital television Standards Developing Organizations (SDOs) settled to develop the technical evolution of the rst-generation Digital Terrestrial Television (DTT) systems. Among others, a primary goal of nextgeneration DTT systems (European DVB-T2 and U.S. ATSC 3.0) is to simultaneously provide TV services to mobile and xed devices. The major drawback of this simultaneous delivery is the dierent requirement of each reception condition. To address these constraints dierent multiplexing techniques have been considered. While DVB-T2 fullled the simultaneous delivery of the two services by Time Division Multiplexing (TDM), ATSC 3.0 adopted the Layered Division Multiplexing (LDM) technology. LDM can outperform TDM and Frequency Division Multiplexing (FDM) by taking advantage of the Unequal Error Protection (UEP) ratio, as both services, namely layers, utilize all the frequency and time resources with dierent power levels. At receiver side, two implementations are distinguished, according to the intended layer. Mobile receivers are only intended to obtain the upper layer, known as Core Layer (CL). In order not to increase their complexity compared to single layer receivers, the lower layer, known as Enhanced Layer (EL) is treated as an additional noise on the CL decoding. Fixed receivers, increase their complexity, as they should performed a Successive Interference Cancellation (SIC) process on the CL for getting the EL. To limit the additional complexity of xed receivers, the LDM layers in ATSC 3.0 are congured with dierent error correction capabilities, but share the rest of physical layer parameters, including the Time v

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Layered-Division Multiplexing: An Enabling Technology for Multicast/Broadcast Service Delivery in 5G

Cited by 51 publications

References 11 publications

Enhanced LDM for Next-Generation Digital Broadcasting Transmission

Enhanced LDM for Next-Generation Digital Broadcasting Transmission

A Fairness–Throughput Tradeoff Perspective on NOMA Multiresolution Broadcasting

Advanced Layered Divsion Multiplexing Technologies for Next-Gen Broadcast

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