A hybrid power line and visible light communication system for indoor hospital applications

Ding, Wenbo; Yang, Fang; Yang, Hui; Wang, Jintao; Wang, Xiaofei; Zhang, Xun; Song, Jian

doi:10.1016/j.compind.2015.01.006

Cited by 103 publications

(50 citation statements)

References 16 publications

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“…The coverage of indoor lighting and visible light communication (VLC) systems is one of the promising approaches for developing smart homes because it can simultaneously provide compact lighting fidelity and convenient data transmission functionality 1–6 . Compared with phosphor-coated blue LEDs, the use of red, green, and blue (RGB) light-emitting diodes (LEDs) to generate a white-light source is an attractive lighting system with a high color rendering index (CRI) 7–9 .…”

Section: Introductionmentioning

confidence: 99%

Tricolor R/G/B Laser Diode Based Eye-Safe White Lighting Communication Beyond 8 Gbit/s

Chi

Wang

et al. 2017

Sci Rep

211

104

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White light generation by mixing red, green, and blue laser diodes (RGB LDs) was demonstrated with Commission International de l'Eclairage coordinates of (0.2928, 0.2981), a correlated color temperature of 8382 K, and a color rendering index of 54.4 to provide a maximal illuminance of 7540 lux. All the white lights generated using RGB LDs were set within the risk group-1 criterion to avoid the blue-light hazard to human eyes. In addition, the RGB-LD mixed white light was diffused using a frosted glass to avoid optical aberration and to improve the performance of the lighting source. In addition, visible light communication (VLC) by using RGB-LD mixed white-light carriers and a point-to-point scheme over 1 m was performed in the directly modulated 16-QAM OFDM data format. In back-to-back transmission, the maximal allowable data rate at 10.8, 10.4, and 8 Gbps was determined for R, G, and B LDs, respectively. Moreover, the RGB-LD mixed white light-based indoor wavelength-division multiplexing (WDM)-VLC system yielded a total allowable transmission data rate of 8.8 Gbps over 0.5 m in free space. Such a high-speed RGB-LD mixed WDM-VLC system without any channel interference can be used to simultaneously provide data transmission and white lighting in an indoor environment.The coverage of indoor lighting and visible light communication (VLC) systems is one of the promising approaches for developing smart homes because it can simultaneously provide compact lighting fidelity and convenient data transmission functionality [1][2][3][4][5][6] . Compared with phosphor-coated blue LEDs, the use of red, green, and blue (RGB) light-emitting diodes (LEDs) to generate a white-light source is an attractive lighting system with a high color rendering index (CRI) [7][8][9] . Such a high-directional white-light source generated using RGB LEDs can be used as desk lamps or daylight lamps.

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Section: Introductionmentioning

confidence: 99%

Tricolor R/G/B Laser Diode Based Eye-Safe White Lighting Communication Beyond 8 Gbit/s

Chi

Wang

et al. 2017

Sci Rep

211

104

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“…To improve the quality of health care, present hospitals are already in the process of implementing E‐health services as a replacement to conventional services. These E‐health services include health knowledge, telemedicine, and electronic records of the patients . For such types of services, there is a dire need for a radiation‐free and high capacity communication system that provides high data rates.…”

Section: Applications Of the Designed Testbedmentioning

confidence: 99%

Physical deployment of enhanced visible light communication system using forward error correction codes

Khalid

Rashid

Asif

et al. 2019

Int J Communication

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Summary With the development of new generation lighting sources, visible light communication (VLC) system has become a complementary solution to traditional radio frequency wireless system. However, the error performance of VLC system is degraded because of multipath effects and interference from other lighting sources that, in turn, reduce the communication range. This work targets the issue of performance degradation of VLC systems in terms of communication range and demonstrates a VLC system design that utilizes forward error correction (FEC) codes as the main tool to fix this issue. Furthermore, the work also covers practical implementation of the proposed VLC system using UART modules programmed in MATLAB. The hardware results demonstrate that the communication range of the proposed VLC system is enhanced up to 0.5 m. Over and above, it is also shown through simulations that the coding gain of the proposed design is more when compared with existing VLC system(s).

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“…A number of recent publications have considered practical implementations of hybrid networks involving the VLC technology. A hybrid power line and VLC system is studied in the work of Ding et al in the context of e‐health management. The modulated signals for the LED are generated by a power line communications device, designed by the authors, exploiting thus the existing power and lighting resources, as well as establishing communications where RF is restricted.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable optical‐radio wireless networks: Meeting the most stringent requirements of future communication systems

Saud

Ahmed

Kumpuniemi

et al. 2019

Trans Emerging Tel Tech

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In this paper, we propose a reconfigurable optical‐radio wireless network characterized by high flexibility and performance. The hybrid network can be dynamically configured, adapting itself to the changing requirements of users or operating environments, dynamics of the transmission medium, and availability of resources. First, the basic concept, system architecture, and key operating modes are introduced. Possible operating scenarios and their relationship to the operating modes are discussed. Then, a practical implementation of the hybrid network is introduced, describing the network components, architecture, modulation scheme, and implementation technologies. Implementation was carried out using mostly off‐the‐shelf components and universal software radio peripheral blocks. Particular attention has been put in implementing a fast handover mechanism between modes, an essential requirement for seamless network reconfiguration. Network performance is evaluated and different switching approaches are compared. The paper demonstrates practically the proposed concept based on dynamic system reconfiguration. For the implementation, a mode switching algorithm was developed making decisions based on the quality of the wireless channels. The system was tested with live video packets transmitted through the network. System performance was assessed through data throughput and packet loss measured for different modulation parameters. The proposed concept, essentially a software‐defined hybrid network, is flexible and makes efficient use of radio resources. Moreover, the network has the potential to achieve high performance. All these characteristics make reconfigurable optical‐radio networks an attractive candidate for fifth generation and beyond.

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A hybrid power line and visible light communication system for indoor hospital applications

Cited by 103 publications

References 16 publications

Tricolor R/G/B Laser Diode Based Eye-Safe White Lighting Communication Beyond 8 Gbit/s

Tricolor R/G/B Laser Diode Based Eye-Safe White Lighting Communication Beyond 8 Gbit/s

Physical deployment of enhanced visible light communication system using forward error correction codes

Reconfigurable optical‐radio wireless networks: Meeting the most stringent requirements of future communication systems

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