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

Garro, Eduardo; Barjau, Carlos; Gómez-Barquero, David; Kim, Jeongchang; Park, Sung Ik; Hur, Namho

doi:10.1109/tbc.2018.2823643

Cited by 17 publications

(4 citation statements)

References 18 publications

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“…Transmit diversity technology is a technique that uses more antennas than the receiver to improve the performance of wireless communication systems. The antenna structure of transmit diversity is Multiple-Input Single-Output (MISO) [9]. By using multiple transmitting antennas to split the transmitted signals into multiple signals and sending them out separately in space, transmit diversity can improve system stability, fault tolerance, and anti-interference capability.…”

Section: Transmit Diversity Technologymentioning

confidence: 99%

Analysis of Spatial Diversity Technology based on MIMO Antenna Structures

Wei

2023

FCIS

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Antenna technology has been continuously evolving and innovating in information transmission networks, providing essential support for information transfer and network infrastructure. This article focuses on introducing the key technologies of MIMO technology and space diversity technology, and analyzes the advantages of space diversity technology based on MIMO antenna structure. By exploring these key technologies in depth, this article helps readers better understand antenna technology and its applications.

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Section: Transmit Diversity Technologymentioning

confidence: 99%

Analysis of Spatial Diversity Technology based on MIMO Antenna Structures

Wei

2023

FCIS

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“…Important concepts in the LDM context were also investigated, such as, the error propagation in the cancellation stage [25], more effective channel estimators [26][27][28][29][30], more efficient video encoding techniques [31][32][33], the comparison between LDM and the traditional time-division multiplexing (TDM) or frequency-division multiplexing (FDM) [34], the use of NUCs to improve LDM performance [35], the application of the technique in satellite broadcast system [36], performance analysis using optimized demappers [37] and the use of Multiple-Input Multiple-Output (MIMO) schemes [38].…”

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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“…In contrast with previous conguration, it uses not only diversity and array gain, but also spatial multiplexing gain. [104], [110]. They equivalent values are summarized in Table 6.1.…”

Section: Mimo Smmentioning

confidence: 99%

“…A LS estimation with a moving average or linear time interpolation and an FFT frequency interpolation [110] is considered for the channel estimator. In addition, an MMSE equalizer is assumed.…”

Section: Receiver Setupmentioning

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 With Distributed Multiple-Input Single-Output Schemes

Cited by 17 publications

References 18 publications

Analysis of Spatial Diversity Technology based on MIMO Antenna Structures

Analysis of Spatial Diversity Technology based on MIMO Antenna Structures

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

Advanced Layered Divsion Multiplexing Technologies for Next-Gen Broadcast

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