Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer Scale
Due to the advantages of high transmission rate, lower power consumption, high security, etc., underwater wireless optical communication (UWOC) has been widely studied and considered as a potential technique for underwater communication. However, its performance is severely degraded by oceanic turbu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/7/458 |
| _version_ | 1797416434430640128 |
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| author | Zhiru Lin Guanjun Xu Qinyu Zhang Zhaohui Song |
| author_facet | Zhiru Lin Guanjun Xu Qinyu Zhang Zhaohui Song |
| author_sort | Zhiru Lin |
| collection | DOAJ |
| description | Due to the advantages of high transmission rate, lower power consumption, high security, etc., underwater wireless optical communication (UWOC) has been widely studied and considered as a potential technique for underwater communication. However, its performance is severely degraded by oceanic turbulence due to refractive index fluctuations, which is caused by the change of inhomogeneous ocean environment. Within our derived spatial power spectrum model under anisotropic oceanic turbulence, we conducted a detailed investigation for a spherical wave propagating in weak anisotropic turbulence in this paper. Based on the derived oceanic spectrum, we proposed a scintillation index model for spherical wave in anisotropic oceanic turbulence considering the aperture averaging effect at non-zero inner scale and limited outer scale. Besides, we analyze the aperture averaging scintillation index under the influence of channel parameters such as inner and outer scales. Simulation results reveal that the scintillation index increases with the increase of the outer scale, while the inner scale induces an opposite trend on the scintillation index. Moreover, the inner scale exhibits a larger impact than the outer scale on the UWOC system over weak oceanic turbulence. |
| first_indexed | 2024-03-09T06:03:13Z |
| format | Article |
| id | doaj.art-50961052da03473ab6adab9284a63db9 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T06:03:13Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-50961052da03473ab6adab9284a63db92023-12-03T12:06:43ZengMDPI AGPhotonics2304-67322022-06-019745810.3390/photonics9070458Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer ScaleZhiru Lin0Guanjun Xu1Qinyu Zhang2Zhaohui Song3Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, ChinaShanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, ChinaCommunication Engineering Research Center, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, ChinaShanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, ChinaDue to the advantages of high transmission rate, lower power consumption, high security, etc., underwater wireless optical communication (UWOC) has been widely studied and considered as a potential technique for underwater communication. However, its performance is severely degraded by oceanic turbulence due to refractive index fluctuations, which is caused by the change of inhomogeneous ocean environment. Within our derived spatial power spectrum model under anisotropic oceanic turbulence, we conducted a detailed investigation for a spherical wave propagating in weak anisotropic turbulence in this paper. Based on the derived oceanic spectrum, we proposed a scintillation index model for spherical wave in anisotropic oceanic turbulence considering the aperture averaging effect at non-zero inner scale and limited outer scale. Besides, we analyze the aperture averaging scintillation index under the influence of channel parameters such as inner and outer scales. Simulation results reveal that the scintillation index increases with the increase of the outer scale, while the inner scale induces an opposite trend on the scintillation index. Moreover, the inner scale exhibits a larger impact than the outer scale on the UWOC system over weak oceanic turbulence.https://www.mdpi.com/2304-6732/9/7/458scintillation indexaperture averaging effectanisotropic turbulenceinner scaleouter scale |
| spellingShingle | Zhiru Lin Guanjun Xu Qinyu Zhang Zhaohui Song Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer Scale Photonics scintillation index aperture averaging effect anisotropic turbulence inner scale outer scale |
| title | Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer Scale |
| title_full | Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer Scale |
| title_fullStr | Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer Scale |
| title_full_unstemmed | Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer Scale |
| title_short | Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer Scale |
| title_sort | scintillation index for spherical wave propagation in anisotropic weak oceanic turbulence with aperture averaging under the effect of inner scale and outer scale |
| topic | scintillation index aperture averaging effect anisotropic turbulence inner scale outer scale |
| url | https://www.mdpi.com/2304-6732/9/7/458 |
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