Orientation-based solar noise impact on underwater and free-space optical wireless communication systems: experimental investigations.

IF 1.4 3区 物理与天体物理 Q3 OPTICS
Saroj Kumar Mahapatra, Manotosh Howlader, Sanjib Kumar Roy, Shailendra Kumar Varshney
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引用次数: 0

Abstract

Solar noise, when it interferes with the received signal at the system receiver (Rx) of an optical wireless communication (OWC) system, degrades the system's performance. The detrimental effect of solar noise on OWC systems has been well established in the literature. This work experimentally demonstrates solar noise interference in the OWC system by pointing the system Rx in various orientations in air and water mediums, e.g., 0° (Rx pointing horizontally leftward), 45°, 90° (Rx pointing vertically downward), 135°, 180° (Rx pointing horizontally rightward), 225°, 270° (Rx pointing vertically upward), and 315°. The experimental outcomes depict the signal's noise content, spectral leakage, and roll-off rate variation at multiple Rx orientations. We also demonstrate the solar noise interference in transmitting an image through the outdoor underwater OWC link by pointing the system Rx in various orientations. Experimental demonstration confirms that the same OWC system never behaves identically in the presence of solar noise if the system Rx keeps changing its orientation during the maneuver.

基于方向的太阳噪声对水下和自由空间光无线通信系统的影响:实验研究。
当太阳噪声干扰光无线通信(OWC)系统接收器(Rx)的接收信号时,会降低系统的性能。太阳噪声对 OWC 系统的有害影响已在文献中得到证实。这项工作通过将系统 Rx 指向空气和水介质中的不同方向,如 0°(Rx 水平向左)、45°、90°(Rx 垂直向下)、135°、180°(Rx 水平向右)、225°、270°(Rx 垂直向上)和 315°,实验证明了太阳噪声对 OWC 系统的干扰。实验结果描述了多个 Rx 方向上的信号噪声含量、频谱泄漏和滚降率变化。我们还演示了通过室外水下 OWC 链路以不同方向指向系统 Rx 传输图像时的太阳噪声干扰。实验证明,如果系统 Rx 在操作过程中不断改变方向,则同一 OWC 系统在太阳噪声下的表现绝不会相同。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
3.40
自引率
10.50%
发文量
417
审稿时长
3 months
期刊介绍: The Journal of the Optical Society of America A (JOSA A) is devoted to developments in any field of classical optics, image science, and vision. JOSA A includes original peer-reviewed papers on such topics as: * Atmospheric optics * Clinical vision * Coherence and Statistical Optics * Color * Diffraction and gratings * Image processing * Machine vision * Physiological optics * Polarization * Scattering * Signal processing * Thin films * Visual optics Also: j opt soc am a.
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