On the Achievable Rate of a Hybrid PLC/VLC/RF Communication System

Kashef, Mohamed; Torky, Ahmed A.; Abdallah, Mohamed; Al-Dhahir, Naofal; Qaraqe, Khalid

doi:10.1109/glocom.2014.7417378

Cited by 8 publications

(20 citation statements)

References 18 publications

(20 reference statements)

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“…The cascaded PLC‐VLC channel analysis was introduced in the work of Ndjiongue et al The aim is to achieve a cost‐effective transmission in a hybrid PLC‐VLC channel by not performing any demodulation in the bridge to analyse the influence of the cascaded linear channels on the orthogonal frequency‐division multiplexing data symbol when it passes through the hybrid PLC‐VLC channel. Many other findings on cascaded systems involving PLC or VLC can be found in previous works . The noise scenario shown in Figure is proposed neglecting the effect of PLC noise on the VLC channel.…”

Section: Introductionmentioning

confidence: 83%

Hybrid PLC‐VLC channel model and spectral estimation using a nonparametric approach

Ndjiongue

Ferreira

Song

et al. 2017

Trans Emerging Tel Tech

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Telecommunication engineering may substantially benefit from the integration of power line communication (PLC) and visible light communication (VLC) technologies. This integration is enabled firstly by the ubiquitous nature of PLC and VLC infrastructures and secondly by the recent advances made in both technologies, and it will be effective with the knowledge of the cascaded PLC‐VLC channel. This paper reports on the spectral analysis and estimation of the dual channel for hybrid systems involving PLC and VLC technologies. The channels are statistically analysed using the nonparametric windowed Welch method. Experimental results giving varieties of simulated PLC‐VLC channel are presented. They show the influence of the number of taps (PLC side) and the line‐of‐sight and the non–line‐of‐sight gains (VLC side) on the PLC‐VLC frequency response. It also indicates that the cascaded channel is influenced by propagation distance and room area. We also show the influence of PLC and VLC channel parameters on the gain and notches.

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Section: Introductionmentioning

confidence: 83%

Hybrid PLC‐VLC channel model and spectral estimation using a nonparametric approach

Ndjiongue

Ferreira

Song

et al. 2017

Trans Emerging Tel Tech

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“…The robust beam forming approach has been used in [25] to calculate the WSR for a multi-cell massive MIMO downlink system. In [4], the authors have investigated achievable data rate of a hybrid system comprising of cascaded PLC/VLC system in coexistence with the RF system for a constrained transmit power. In this study, the authors have developed an algorithm that optimally divides the maximum allocated power among all three communication links such that the achievable data rate can be maximized [4].…”

Section: C1v C2vmentioning

confidence: 99%

“…In [4], the authors have investigated achievable data rate of a hybrid system comprising of cascaded PLC/VLC system in coexistence with the RF system for a constrained transmit power. In this study, the authors have developed an algorithm that optimally divides the maximum allocated power among all three communication links such that the achievable data rate can be maximized [4]. Further, an investigation of power allocation problem has been carried out in [1] for hybrid PLC/VLC system in coexistence with RF in an indoor environment.…”

Section: C1v C2vmentioning

confidence: 99%

“…These PLC terminals can communicate through power lines, whereas, mobile devices have to connect via either RF or VLC interfaces [3]. The Internet of Things (IoT) has led to the deployment of millions of smart devices (SDs) due to their vast applications [4]. Moreover, providing high data rates for these large numbers of SDs, using the conventional RF based communication systems has become a challenging task, owing to the limited spectrum.…”

Section: Introductionmentioning

confidence: 99%

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Optimisation of indoor hybrid PLC/VLC/RF communication systems

et al. 2020

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In this work, we propose a hybrid power line communication (PLC)/visible light communication (VLC)/radio frequency (RF) fronthaul with a fiber based wired backhaul system to support massive number of smart devices (SDs). Since, a signal-to-noise ratio (SNR) based access point (AP) association and bandwidth (BW) allocation for each SD do not necessarily improve the system capacity, we propose novel and efficient AP association and BW allocation strategies to maximize the sum rate capacity (SRC) of the hybrid system under consideration. An optimization problem is formulated for the SRC with the AP association and BW allocation as the optimization parameters and a hierarchical decomposition method is used to convert the non-linear optimization problem into a set of convex optimization problems. Then, the proposed strategies are used to solve the optimization problem in an iterative manner till the SRC converges to an optimal value. Further, an analytical approximation for the BW allocated to each SD for a given AP association is derived using the Lagrangian multiplier method. The performance of the proposed system is evaluated through extensive numerical results. Moreover, the effect of the increased number of SDs on the optimal SRC is analysed.

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“…The complementary optical and radio networks would not only enhance the redundancy, an efficient use of spectrum would possibly reduce the spectrum congestion or overloading while communicating on both network simultaneously. Indoor applications of hybrid networks have been predominantly studied [34,35], as in [34] an indoor application of hybrid opticalradio network is considered to transmit the indoor traffic to base station using a RF relay. Associated challenges such as maximizing the throughput by selective transmission power have also been simulated to reflect the spectrum efficiency of hybrid networks [35].…”

Section: A Reconfigurable Hybrid Optical-radio Network For Hofmentioning

confidence: 99%

Wireless Communications for the Hospital of the Future: Requirements, Challenges and Solutions

Ahmed

Karvonen

Kumpuniemi

et al. 2019

Int J Wireless Inf Networks

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In this conceptual paper, we discuss the concept of hospital of the future (HoF) and the requirements for its wireless connectivity. The HoF will be mostly wireless, connecting patients, healthcare professionals, sensors, computers and medical devices. Spaces of the HoF are first characterized in terms of communicational performance requirements. In order to fulfil the stringent requirements of future healthcare scenarios, such as enhanced performance, security, safety, privacy, and spectrum usage, we propose a flexible hybrid optical-radio wireless network to provide efficient, high-performance wireless connectivity for the HoF. We introduce the concept of connected HoF exploiting reconfigurable hybrid optical-radio networks. Such a network can be dynamically reconfigured to transmit and receive optical, radio or both signals, depending on the requirements of the application. We envisage that HoF will consist of numerous communication devices and hybrid optical-radio access points to transmit data using radio waves and visible light. Light-based communications exploit the idea of visible light communications (VLC), where solid-state luminaries, white light-emitting diodes (LEDs) provide both room illumination as well as optical wireless communications (OWC). The hybrid radio-optical communication system can be used in principle in every scenario of the HoF. In addition to the hybrid access, we also propose a reconfigurable opticalradio communications wireless body area network (WBAN), extending the conventional WBAN to more generic and highly flexible solution. As the radio spectrum is becoming more and more congested, hybrid wireless network approach is an attractive solution to use the spectrum more efficiently. The concept of HoF aims at enhancing healthcare while using hospital resources efficiently. The enormous surge in novel communication technologies such as internet of things (IoT) sensors and wireless medical communications devices could be undermined by spectral congestion, security, safety and privacy issues of radio networks. The considered solution, combining optical and radio transmission network could increase spectral efficiency, enhancing privacy while reducing patient exposure to radio frequency (RF). Parallel radio-optical communications can enhance reliability and security. We also discuss possible operation scenarios and applications that can be introduced in HoF as well as outline potential challenges. Keywords Hospital of the future • Reconfigurable networks • Visible light communications • Hybrid wireless networks • Optical wireless communications • Wireless body area networks

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On the Achievable Rate of a Hybrid PLC/VLC/RF Communication System

Cited by 8 publications

References 18 publications

Hybrid PLC‐VLC channel model and spectral estimation using a nonparametric approach

Hybrid PLC‐VLC channel model and spectral estimation using a nonparametric approach

Optimisation of indoor hybrid PLC/VLC/RF communication systems

Wireless Communications for the Hospital of the Future: Requirements, Challenges and Solutions

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