Abstract
A scheme for designing a novel optical receiving antenna is proposed to extend the field of view, receive higher power, and reduce the received-energy spot area for indoor visible light communication (VLC). ProE is used to model the antenna, while TracePro and Matlab are employed for simulations. Firstly, the lens wall of a compound parabolic concentrator with a certain rotation angle and thickness is obtained through rotating the parabolic reflector cross-section reference curve. Furthermore, a novel optical receiving antenna is designed in combination with the advantages of the lens-walled CPC and the spherical lens. Then, the Taguchi methodology and ANOVA technique are utilized to optimize the structure parameters of the receiving antenna. Finally, an indoor VLC system model is established and the channel performance is analyzed. Simulation results show that the designed antenna achieves the following performances: optical gain of 21.53, field of view of 45°, and spot size of 3 mm. The received power is 9.5532 dBm, and the SNR is 86.2526 dB, which further confirms that the designed optical receiving antenna is suitable for indoor VLC systems.
Highlights
Light emitting diodes (LEDs) have been widely utilized in the fields of visual transmission, information display, and many other means of illuminance because of their high brightness levels, long life span, and low power consumption [1]–[3]
The received power, signal-to-noise ratio (SNR), and bit error rate (BER) of the detector are analyzed under the line of sight (LOS), which verifies the possibility of combining LED illuminance with communication [11]
Considering the communication requirements of visible light communication (VLC) systems and the limitation of traditional optical receiving antenna, in this study, we propose and demonstrate a novel optical receiving antenna that can extend the field of view, receive higher power, and reduce the received-energy spot size
Summary
Light emitting diodes (LEDs) have been widely utilized in the fields of visual transmission, information display, and many other means of illuminance because of their high brightness levels, long life span, and low power consumption [1]–[3]. It has an installation and measurement barriers, and it is difficult for finding the best structure combinations of these two parts to ensure good performance in the VLC system during the optimization process With this backdrop, here, we propose and demonstrate a scheme to design a novel optical receiving antenna that can provide high gain, good channel performance, and small spot. In practical application, the size of the photodetector is small, and the antenna designed in [24] is separated into two stages, which has installation and measurement barriers It is difficult for finding the best structure combinations of the two-separated optical lens to ensure good performance in the VLC system during the optimization process. Each of these three factors is assigned three possible level settings
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