Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra
In addition to large path loss, non-line-of-sight (NLOS) optical wireless scattering communication suffers time dispersion due to the multipath nature of the NLOS scattering channel. In this paper, the channel pulse delay spreads over broad spectra <inline-formula><tex-math notation="L...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2017-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7937787/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849418088537128960 |
|---|---|
| author | Yu Sun Chen Gong Zhengyuan Xu Yafeng Zhan |
| author_facet | Yu Sun Chen Gong Zhengyuan Xu Yafeng Zhan |
| author_sort | Yu Sun |
| collection | DOAJ |
| description | In addition to large path loss, non-line-of-sight (NLOS) optical wireless scattering communication suffers time dispersion due to the multipath nature of the NLOS scattering channel. In this paper, the channel pulse delay spreads over broad spectra <inline-formula><tex-math notation="LaTeX">$\left[ {0.2,1.6} \right]$</tex-math></inline-formula> μm in polydisperse aerosols are investigated based on the Monte Carlo ray-tracing method. It is shown that the pulse delay spread first rises and then falls as the wavelength increases from deep ultraviolet to near-infrared spectrum. A comparison of pulse delay spread and path loss distributions over broad spectra is performed, which implies a tradeoff of channel bandwidth and power loss in the wavelength selection of NLOS optical scattering communication. The effects of relative humidity (RH) variations on NLOS optical scattering communication link are also studied, which indicate that RH variations do not significantly change the ultraviolet NLOS optical scattering communication link, but for near infrared spectrum, high RH condition can alleviate the large path loss and time dispersion and thus improve the NLOS optical scattering communication performance. |
| format | Article |
| id | doaj-art-9296db516002437eb769dd99bb84e633 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-9296db516002437eb769dd99bb84e6332025-08-20T03:32:32ZengIEEEIEEE Photonics Journal1943-06552017-01-019311210.1109/JPHOT.2017.27074687937787Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad SpectraYu Sun0Chen Gong1Zhengyuan Xu2Yafeng Zhan3Space Center, Tsinghua University, Beijing, ChinaKey Laboratory of Wireless-Optical Communications, Chinese Academy of Sciences, School of Information Science and Technology, University of Science and Technology of China, Hefei, ChinaKey Laboratory of Wireless-Optical Communications, Chinese Academy of Sciences, School of Information Science and Technology, University of Science and Technology of China, Hefei, ChinaSpace Center, Tsinghua University, Beijing, ChinaIn addition to large path loss, non-line-of-sight (NLOS) optical wireless scattering communication suffers time dispersion due to the multipath nature of the NLOS scattering channel. In this paper, the channel pulse delay spreads over broad spectra <inline-formula><tex-math notation="LaTeX">$\left[ {0.2,1.6} \right]$</tex-math></inline-formula> μm in polydisperse aerosols are investigated based on the Monte Carlo ray-tracing method. It is shown that the pulse delay spread first rises and then falls as the wavelength increases from deep ultraviolet to near-infrared spectrum. A comparison of pulse delay spread and path loss distributions over broad spectra is performed, which implies a tradeoff of channel bandwidth and power loss in the wavelength selection of NLOS optical scattering communication. The effects of relative humidity (RH) variations on NLOS optical scattering communication link are also studied, which indicate that RH variations do not significantly change the ultraviolet NLOS optical scattering communication link, but for near infrared spectrum, high RH condition can alleviate the large path loss and time dispersion and thus improve the NLOS optical scattering communication performance.https://ieeexplore.ieee.org/document/7937787/Free-space optical communicationnon-line-of-sightpath losspulse delay spreadrelative humidity. |
| spellingShingle | Yu Sun Chen Gong Zhengyuan Xu Yafeng Zhan Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra IEEE Photonics Journal Free-space optical communication non-line-of-sight path loss pulse delay spread relative humidity. |
| title | Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra |
| title_full | Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra |
| title_fullStr | Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra |
| title_full_unstemmed | Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra |
| title_short | Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra |
| title_sort | link gain and pulse width broadening evaluation of non line of sight optical wireless scattering communication over broad spectra |
| topic | Free-space optical communication non-line-of-sight path loss pulse delay spread relative humidity. |
| url | https://ieeexplore.ieee.org/document/7937787/ |
| work_keys_str_mv | AT yusun linkgainandpulsewidthbroadeningevaluationofnonlineofsightopticalwirelessscatteringcommunicationoverbroadspectra AT chengong linkgainandpulsewidthbroadeningevaluationofnonlineofsightopticalwirelessscatteringcommunicationoverbroadspectra AT zhengyuanxu linkgainandpulsewidthbroadeningevaluationofnonlineofsightopticalwirelessscatteringcommunicationoverbroadspectra AT yafengzhan linkgainandpulsewidthbroadeningevaluationofnonlineofsightopticalwirelessscatteringcommunicationoverbroadspectra |