基于占空比调节的紫外线散射通信系统的设计与优化

IF 2.1 4区 物理与天体物理 Q2 OPTICS Photonics Pub Date : 2024-07-16 DOI:10.3390/photonics11070662
Yu Jiao, Yingkai Zhao, Li Kuang, Ranxi Lin, Jin Ning, Jianguo Liu
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引用次数: 0

摘要

本文介绍了一种新型紫外线(UV)散射通信方案,旨在动态调整信号占空比,优化开关键控(OOK)调制,降低误码率(BER),尤其是在不同速率设置下。这种方法解决了 LED 尾随效应带来的重大挑战,这种效应会导致信号波动并增加高速通信中的误码率。这种误码率抑制方案是紫外通信研究中首次提出的,无需额外硬件或复杂算法即可提高通信性能。本文引入了一个包含路径损耗和 LED 尾随效应的紫外通信模型,并推导出信号从发射器到接收器的概率密度函数。通过改变信号占空比,可有效地将尾迹引起的误码率降至最低。此外,利用单散射模型给出了信号传输误码率的闭式表达式,并通过综合模拟和实验测试验证了所提出的紫外通信系统。结果表明,在较高的通信速度下,LED 尾随对误码率有明显的影响,而在较低的通信速度下,其影响则不太明显。通过优化不同通信速率下的占空比参数,研究结果表明,较低的占空比设置可显著降低较高速度下的误码率。这进一步证明了所提出的用于 OOK 调制光通信的紫外通信解决方案的卓越性能。
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Design and Optimization of an Ultraviolet Scattering Communication System Based on Duty Cycle Regulation
In this paper, a novel ultraviolet (UV) scatter communication scheme is presented, designed to dynamically adjust the signal duty cycle to optimize on–off keying (OOK) modulation and reduce the bit error rate (BER), particularly under varying rate settings. This approach addresses the significant challenge posed by LED tailing effects, which cause signal fluctuations and increase BER in high-speed communications. This BER suppression scheme is proposed for the first time in UV communication research, enhancing communication performance without the need for additional hardware or complex algorithms. A UV communication model that incorporates both path loss and LED tailing effects is introduced, with the probability density function of the signal from transmitter to receiver derived. By varying the signal duty cycle, tailing-induced BER is effectively minimized. Additionally, a closed-form expression for signal transmission BER using a single-scattering model is provided, and the proposed UV communication system is validated through comprehensive simulations and experimental tests. The results indicate that LED tailing has a pronounced impact on BER at higher communication speeds, while its effects are less significant at lower speeds. By optimizing the duty cycle parameters for various communication rates, findings demonstrate that lower duty cycle settings significantly reduce the BER at higher speeds. This further demonstrates the excellent performance of the proposed UV communication solution for OOK-modulated optical communication.
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来源期刊
Photonics
Photonics Physics and Astronomy-Instrumentation
CiteScore
2.60
自引率
20.80%
发文量
817
审稿时长
8 weeks
期刊介绍: Photonics (ISSN 2304-6732) aims at a fast turn around time for peer-reviewing manuscripts and producing accepted articles. The online-only and open access nature of the journal will allow for a speedy and wide circulation of your research as well as review articles. We aim at establishing Photonics as a leading venue for publishing high impact fundamental research but also applications of optics and photonics. The journal particularly welcomes both theoretical (simulation) and experimental research. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material.
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