On the Performance of a Cooperative PLC-VLC Indoor Broadcasting System Consisting of Mobile User Nodes for IoT Networks

When the distance between the source and the target is long, the signal will be affected by atmospheric turbulence, weather conditions and obstacles, which cannot support the information transmission. One of the existing solutions is to use relay-assisted technology (RAT). It makes the communications between the source and the destination possible under better channel conditions by setting up relay between the source and the destination. There are few comprehensive articles about relay-assisted technology in OWC. To fill this gap, this paper introduces the RAT of indoor optical wireless communications (IOWC), outdoor optical wireless communications (OOWC) and underwater optical wireless communications (UOWC) in different application scenarios, which has a better effect than direct communication between source and destination. The relay protocols, channel models, modulation techniques under three relay modes are reviewed. Finally, challenges of RAT in OWC are put forward and potential solutions are also given.

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“…The system model under consideration is shown in Fig. 10 [ 168]. PLC users can be connected to the network through PLC modems.…”

Section: ) Channel Model Of Rat In Iowcmentioning

confidence: 99%

Relay-Assisted Technology in Optical Wireless Communications: A Survey

et al. 2020

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“…In [59], a hybrid PLC/IWOC/RF future for the wired backhaul system based on optical fibers has been proposed to improve the realized SRC. Meanwhile, PLC-IWOC system also provides a lot of advantages, such as good security, economical and easy to deploy, good transmission efficiency, high capacity, and high data rate [20,73]. Thus, these systems could be a potential candidate to provide ubiquitous connectivity for Internet of Things (IoT) devices.…”

Section: Integrated Transmission Schemes Of Power Line and Indoor Wireless Optical Communicationsmentioning

confidence: 99%

Advanced Progress of Optical Wireless Technologies for Power Industry: An Overview

et al. 2020

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Optical wireless communications have attracted widespread attention in the traditional power industry because of the advantages of large spectrum resources, strong confidentiality, and freedom from traditional electromagnetic interference. This paper mainly summarizes the major classification and frontier development of power industry optical wireless technologies, including the indoor and outdoor channel characteristics of power industry optical wireless communication system, modulation scheme, the performance of hybrid power line, and indoor wireless optical communications system. Furthermore, this article compares domestic and foreign experiments, analyzes parameters for instance transmission rate, and reviews different application scenarios such as power wireless optical positioning and monitoring. In addition, in view of the shortcomings of traditional power technology, optical wireless power transfer technology is proposed and combined with unmanned aerial vehicles to achieve remote communication. At last, the main challenges and possible solutions faced by power industry wireless optical technologies are proposed.

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“…R ECENTLY, visible light communication (VLC) with inherent security feature has become a promising option to realize secure data transmission in industrial Internet of Things (IIoTs) [1]- [4]. In IIoT-VLC systems, small attocells are densely distributed to achieve higher spatial reuse rate, and diverse mobile users require varies of data for status monitoring, action control and reaction feedback, most of which are short bursts and thus desiring higher efficiency and lower latency transmission [5]- [9].…”

Section: Introductionmentioning

confidence: 99%

Integrated Frame Coding for Short Burst Transmission in Mobile Visible Light Communication Systems

2022

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Recently, visible light communication (VLC) has become a promising option for secure data transmission in industrial Internet of Things (IIoTs). In IIoT-VLC systems, small attocells are adopted to achieve higher spatial reuse rate, and the transmission of data, control and feedback bursts often requires high efficiency and real-time feature. Conventionally, multi-field (MF) frames are used in VLC systems which consists of sync header, channel training sequence, check field, etc. in addition to data payload. However, for short burst transmission, MF frames could result in efficiency loss and latency increase due to useless padding bits. In this paper, a novel coding scheme named integrated frame code (IFC) in physical layer to realize efficient and real-time transmission simultaneously is presented. IFC scheme reduces latency by simplifying transmission procedure and decreases overhead redundancy by integrated design. Specifically, we propose a joint soft-decision criterion for receiving without separate synchronization and channel estimation and then analyze its error performance. After that, we present IFC construction criterion and two design examples. At last, simulation results confirm that for short burst transmission, IFC achieves better efficiency and robustness than MF especially in moving process.

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On the Performance of a Cooperative PLC-VLC Indoor Broadcasting System Consisting of Mobile User Nodes for IoT Networks

Cited by 22 publications

References 30 publications

Relay-Assisted Technology in Optical Wireless Communications: A Survey

Relay-Assisted Technology in Optical Wireless Communications: A Survey

Advanced Progress of Optical Wireless Technologies for Power Industry: An Overview

Integrated Frame Coding for Short Burst Transmission in Mobile Visible Light Communication Systems

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