دانلود رایگان مقاله انگلیسی مخابرات نوری بی سیم زیر آب با استفاده از گیرنده پنل خورشیدی بدون لنز - الزویر 2018

ABSTRACT

In this paper, we first propose that self-powered solar panels featuring large receiving area and lens-free operation have great application prospect in underwater vehicles or underwater wireless sensor networks (UWSNs) for data collection. It is envisioned to solve the problem of link alignment. The low-cost solar panel used in the experiment has a large receiving area of 5 cm2 and a receiving angle of 20◦ . Over a 1-m air channel, a 16-quadrature amplitude modulation (QAM) orthogonal frequency division multiplexing (OFDM) signal at a data rate of 20.02 Mb/s is successfully transmitted within the receiving angle of 20◦ . Over a 7-m tap water channel, we achieve data rates of 20.02 Mb/s using 16-QAM, 18.80 Mb/s using 32-QAM and 22.56 Mb/s using 64-QAM, respectively. By adding different quantities of Mg(OH)2 powders into the water, the impact of water turbidity on the solar panel-based underwater wireless optical communication (UWOC) is also investigated.

4. Conclusion

In this paper, we have investigated the benefits of a self-powered solar panel, with large receiving area and lens-free operation, used as a detector in an UWOC system. The solar panel has a receiving area as large as ∼5 cm2 and a receiving angle of around 20◦ , which can effectively relax the link alignment. Over a 1-m air channel, a data rate of 20.02 Mb/s is achieved using a 16-QAM OFDM signal within the receiving angle of 20◦ . Over a 7-m tap water channel, we acquire data rates of 20.02 Mb/s, 18.80 Mb/s and 22.56 Mb/s using 16-QAM, 32-QAM and 64-QAM OFDM signals, respectively. Finally, we investigate the impact of water turbidity on the solar panel-based UWOC by adding Mg(OH)2 powders into the water. According to the presented results above, we can conclude that a solar panel with a large receiving area, lens-free operation and a dual function of data detection and energy harvesting has great potential for future selfpowered underwater devices.