NOMA for Energy-Efficient LiFi-Enabled Bidirectional IoT Communication

Chen, Chen; Fu, Shu; Jian, Xin; Liu, Min; Deng, Xiong; Ding, Zhiguo

doi:10.1109/tcomm.2021.3051912

Cited by 67 publications

(28 citation statements)

References 39 publications

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“…A comprehensive survey on the energy efficiency of medium access control for cellular IoT is presented on the source of energy dissipation [28]. An adaptive channel [29] and a QoS approach are proposed for IoT bidirectional communication for energy efficiency and green computing. Edge computing is used for enabling the rapid detection of vehicle locations within IoT [30].…”

Section: Iintroductionmentioning

confidence: 99%

An Energy-Efficient Data Aggregation Mechanism for IoT Secured by Blockchain

et al. 2022

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The Internet of Things (IoT) is getting important and interconnected technologies of the world, consisting of sensor devices. The internet is smoothly changing from an internet of people towards an Internet of Things, which permits various objects to connect to another wirelessly. The energy consumption of the IoT routing protocol can affect the network life span. In addition, the high volume of data produced by IoT will result in transmission collision, security issues, and energy dissipation due to increased data redundancy because tiny sensors are usually hard to recharge after they are deployed. Generally, to save energy, data aggregation reduces data redundancy at each node by turning some nodes into sleep mode and others into wake mode. Therefore, it is important to group the nodes with high data similarity using the fuzzy matrix. Then, the data received from the member nodes at the Cluster Head (CH) are analyzed using a fuzzy similarity matrix for clustering. In the next step, after clustering, some nodes are chosen from all groups as redundant nodes. The sleep scheduling mechanism is then applied to reduce data redundancy, network traffic jamming, and transmission costs. We have proposed an Energy-Efficient Data Aggregation Mechanism (EEDAM) secured by blockchain, which uses a data aggregation mechanism at the cluster level to save energy. As edge computing is used to provide on-demand trusted services to IoT with minimum delay, blockchain is integrated inside a cloud server, so the edge is validated by the blockchain to provide secure services to IoT. Finally, we performed simulations to calculate the performance of the proposed mechanism and compared it with the conventional energy-efficient algorithms. The simulation results show that the proposed structural design can successfully reduce the amount of data, provide proper security to the IoT, and extend the wireless sensor network (WSN).

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Section: Iintroductionmentioning

confidence: 99%

An Energy-Efficient Data Aggregation Mechanism for IoT Secured by Blockchain

et al. 2022

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“…LiFi utilizing off-the-shelf LEDs was proposed as an enabler for the IoT in indoor environments [11] with three main features such as precise positioning, power delivery since energy can be harvested from light, and inherent security [11]. In [12], the LiFi-enabled bidirectional IoT communications system with visible and infrared lights used in the downlink and uplink, respectively was investigated. In the proposed bidirectional LiFi-IoT system, a non-orthogonal multiple access scheme with the quality-of-service guaranteed optimal power allocation strategy was adopted to maximize the energy efficiency of both down-and up-link [12].…”

Section: Introductionmentioning

confidence: 99%

“…In [12], the LiFi-enabled bidirectional IoT communications system with visible and infrared lights used in the downlink and uplink, respectively was investigated. In the proposed bidirectional LiFi-IoT system, a non-orthogonal multiple access scheme with the quality-of-service guaranteed optimal power allocation strategy was adopted to maximize the energy efficiency of both down-and up-link [12]. Therefore, the realization of all optical IoT (OIoT) using the VLC/OCC technology with multiuser bidirectional transmission [13], multiple access [14], and handover [15] features has been made possible [16].…”

Section: Introductionmentioning

confidence: 99%

A SIMO Hybrid Visible-Light Communication System for Optical IoT

Teli

Chvojka

Vítek

et al. 2022

IEEE Internet Things J.

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…Few studies about the implementation of NOMA in VLC systems have confirmed that NOMA is a potential candidate for high-speed VLC systems. For instance, the authors of [26] proposed the NOMA based directional light fidelity (LiFi) system in which visible light was used in the downlink and infrared light was used in uplink to improve energy efficiency and support for high-speed IoT devices. The performance of NOMA and orthogonal FDMA was compared in a VLC system with illumination constraints, and its outperformance was shown in [25].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Short Packets in NOMA VLC Systems

Tran

Kim

2022

IEEE Access

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In this paper, we propose a theoretical framework for analyzing the performance of the short-packet communication (SPC) in a downlink non-orthogonal multiple access (NOMA) visible light communication (VLC) system in which one light emitting diode (LED) communicates with two singlephotodiode users. The analytical expression of the block error rate (BLER) is approximated by Gaussian-Chebyshev quadrature method, based on which the reliability, throughput, and latency expressions are deduced. Further, we jointly optimize power allocation coefficients and transmission rates to maximize sum throughput of the SPC-NOMA VLC system. The numerical results show that (i) our proposed system well satisfies the stringent requirements of the ultra-reliable and low latency communication (URLLC) at signal-to-noise ratio (SNR) larger than 130 dB; (ii) SPC-NOMA VLC systems outperform SPC-orthogonal multiple access (OMA) VLC systems in terms of reliability, latency, and throughput; (iii) the impacts of block-length, power allocation coefficients, transmission rates, and LED semi-angle are examined.INDEX TERMS Short packet comminication (SPC), non-orthogonal multiple access (NOMA), visible light communication (VLC), ultra-reliable and low latency communication (URLLC).

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NOMA for Energy-Efficient LiFi-Enabled Bidirectional IoT Communication

Cited by 67 publications

References 39 publications

An Energy-Efficient Data Aggregation Mechanism for IoT Secured by Blockchain

An Energy-Efficient Data Aggregation Mechanism for IoT Secured by Blockchain

A SIMO Hybrid Visible-Light Communication System for Optical IoT

Performance Analysis of Short Packets in NOMA VLC Systems

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