Abstract

Organic light emitting diodes (OLEDs) have recently received growing interest for their merits as soft light and large panels at a low cost for the use in public places such as airports, shopping centers, offices, and train or bus stations. Moreover, the flexible substrate-based OLEDs provide an attractive feature of having curved or rolled lighting sources for the use in wearable devices and display panels. This technology can be implemented in visible light communications (VLC) for several applications such as visual display, data communications, and indoor localization. This article aims to investigate the use of flexible OLED-based VLC in indoor environments (i.e., office, corridor and semi-open corridor in shopping malls). We derive a two-term power series model to be match with the root-mean-square delay spread and optical path loss (OPL). We show that, for OLED positioned on outer-wall of shops, the channel gain is enhanced in contrast to them being positioned on the inner-wall. Moreover, the channel gain in empty environments is higher compare with the furnished rooms. We show that, the OPL for a 10 m link span are lower by 4.4 and 6.1 dB for the empty and semi-open corridors compared with the furnished rooms, when OLED is positioned on outer-wall of shops. Moreover, the channel gain in the corridor is higher compared with the semi-open corridor. We also show that, in furnished and semi-open corridors the OPL values are 55.6 and 57.2 dB at the center of corridor increasing to 87.6 and 90.7 dB at 20 m, respectively, when OLED is positioned on outer-wall of shops.

Highlights

  • Visible light communications (VLC) with its huge available bandwidth [1] and its dual functionality, i.e., illumination and safe and low-cost communications [2], has a great potential for different high data rate fixed and mobile applications [3]

  • The user is moving along the shop windows at a distance of 2 m on the path donated as dy from −20 to 20 m, where Tx is placed at 0 m position. For both empty and furnished corridor and semi-open environments, we have considered two scenarios of, where the Organic light emitting diodes (OLEDs) panel is located on the inner shop wall behind the glass window and on the wall or shop window inside the corridor, see Figures 4b,c and 5b,c

  • We investigated the performance of OLED-based VLC system and the channel characteristics in office, corridor, and semi-open environments

Read more

Summary

Introduction

Visible light communications (VLC) with its huge available bandwidth [1] and its dual functionality, i.e., illumination and safe and low-cost communications [2], has a great potential for different high data rate fixed and mobile applications [3]. The VLC technology has many advantages include inherent security, energy efficiency, healthy for human, and unregulated bandwidth [4,5]. These features make it attractive for numerous applications in different fields including indoor networking [6], vehicular communication [7], medical applications [8], Internet access for vehicles and in airplane cabins [9], and positioning systems [10]. The single PD can be replaced by an angle diversity Rx, which contains multiple PDs oriented in different directions as reported in [11].

Objectives
Results
Conclusion
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call