Layered Division Multiplexing With Multi-Radio-Frequency Channel Technologies

Garro, Eduardo; Giménez, Jordi Joan; Park, Sung Ik; Gómez-Barquero, David

doi:10.1109/tbc.2015.2492474

Cited by 9 publications

(7 citation statements)

References 22 publications

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“…Channel bonding is not compatible with MIMO, however the remaining features are compatible with channel bonding, including but not limited to LDM [26], MISO, PAPR, etc.…”

Section: A Channel Bondingmentioning

confidence: 99%

An Overview of the ATSC 3.0 Physical Layer Specification

Fay

Michael

Gómez-Barquero

et al. 2016

IEEE Trans. on Broadcast.

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248

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“…Channel bonding is not compatible with MIMO, however the remaining features are compatible with channel bonding, including but not limited to LDM [26], MISO, PAPR, etc.…”

Section: A Channel Bondingmentioning

confidence: 99%

An Overview of the ATSC 3.0 Physical Layer Specification

Fay

Michael

Gómez-Barquero

et al. 2016

IEEE Trans. on Broadcast.

Self Cite

248

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“…LDM has been combined with several technologies [4,12]. Among these, LDM that makes use of spatial modulation (SM) has shown promise in comparison to conventional LDM [13][14][15][16][17] due to its potential for more SE, lower energy consumption, and easier installation.…”

Section: Introductionmentioning

confidence: 99%

Biased-Power Allocation and Shared-Antenna Selection Techniques for Spatial Modulation-Based Layer Division Multiplexing Systems

et al. 2023

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This study proposes two approaches for improving the effectiveness of spatial modulation integrated into layer division multiplexing (SM-LDM) in broadcasting systems: biased-power allocation (Bi-PA) and shared antenna selection (SAS). Even though different data rates are employed in SM-LDM systems, Bi-PA enhances bit error rate (BER) fairness across layers. The ideal power ratios are adaptively determined by balancing signal-to-interference plus noise ratios with a preference for the lower layer (LL) that involves a higher modulation order. SAS alleviates the complexity of successive interference cancellation and enhances spectral and energy efficiencies. Both the LL and upper layer (UL) share the antenna selection decision and transmit using a single antenna. The UL carries a space shift keying signal while the entire power is allocated for the LL. We analyze the spectral efficiency for the SAS-based SM-LDM system with finite alphabet inputs. Numerical results demonstrate the advantages of the proposed approaches. Compared to pre-assigned-PA (Pre-PA), Bi-PA shows nearly identical BERs for both layers and solves the error floor problem. The sharing property and common layer transmission of SAS-based SM-LDM yield a significant BER reduction relative to conventional SM-LDM. It provides gains ranging from 7 to 15 dB for LL at BER equal to 10−3, while UL performance ranges from slight gain to minor loss. Furthermore, both Bi-PA and SAS techniques enhance the achievable LL rate and sum-rate at low and intermediate signal-to-noise ratio values. The Bi-PA technique can achieve an improvement of up to two bits in LL rate and less than one bit in sum-rate at a signal-to-noise ratio of −0.5 dB, while the SAS technique can achieve an improvement of up to two bits in LL rate and less than one bit in sum-rate. These findings show that both proposed techniques have a considerable impact on enhancing the fairness, BER performance, and feasible rates of SM-LDM systems, making them promise for broadcast system designs.

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“…Different studies for the joint transmission of LDM with other technologies, such as multi-RF channel (Channel Bonding) [12], [13], or Scalable High Efficiency Video Coding (SHVC) [14] have been already assessed. However, the joint transmission of distributed MISO schemes with LDM in an SFN has not been evaluated yet.…”

Section: Introductionmentioning

confidence: 99%

Layered Division Multiplexing With Distributed Multiple-Input Single-Output Schemes

Garro

Barjau

Gómez-Barquero

et al. 2019

IEEE Trans. on Broadcast.

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Single Frequency Networks (SFN) provides an increased spectral efficiency compared to the traditional Multiple Frequency Networks (MFN). However, some coverage areas in SFN can be affected by destructive interferences. In order to reduce these situations, distributed Multiple-Input Single-Output (MISO) schemes have been adopted in the new Digital Terrestrial Television (DTT) standards, Alamouti in DVB-T2 and Transmit Diversity Code Filter Sets (TDCFS) in ATSC 3.0. On the other hand, Layered Division Multiplexing (LDM), a Non-Orthogonal Multiple Access (NOMA) technology, has been adopted in ATSC 3.0 due to its spectral efficiency increase compared to Time or Frequency Division Multiplexing (TDM/FDM). The LDM signal is formed by a power superposition of two independent signals, which are designed for different reception conditions (mobile and fixed-rooftop). The combination of distributed MISO and LDM techniques has not been evaluated yet. In this paper the joint transmission of LDM with distributed MISO is analyzed in terms of complexity and the joint performance is evaluated by means of physical layer simulations.

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Layered Division Multiplexing With Multi-Radio-Frequency Channel Technologies

Cited by 9 publications

References 22 publications

An Overview of the ATSC 3.0 Physical Layer Specification

An Overview of the ATSC 3.0 Physical Layer Specification

Biased-Power Allocation and Shared-Antenna Selection Techniques for Spatial Modulation-Based Layer Division Multiplexing Systems

Layered Division Multiplexing With Distributed Multiple-Input Single-Output Schemes

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