10Gb/s Two-User Spatial Diversity FSO-CDMA Wiretap Channel Based on Reconfigurable Optical Encoder/Decoders
Due to the effect of atmospheric turbulence, the transmission reliability and physical-layer security of free space optical (FSO) communication system are facing many challenges. In this paper, for the first time, we design and investigate a 10 Gb/s reconfigurable FSO wiretap channel based on spatia...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9007416/ |
| _version_ | 1818929421842644992 |
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| author | Jianhua Ji Zihua Zheng Fang Peng Jianjia Zhang Bing Wu Ming Xu Ke Wang |
| author_facet | Jianhua Ji Zihua Zheng Fang Peng Jianjia Zhang Bing Wu Ming Xu Ke Wang |
| author_sort | Jianhua Ji |
| collection | DOAJ |
| description | Due to the effect of atmospheric turbulence, the transmission reliability and physical-layer security of free space optical (FSO) communication system are facing many challenges. In this paper, for the first time, we design and investigate a 10 Gb/s reconfigurable FSO wiretap channel based on spatial diversity and optical code division multiple access (OCDMA). Reconfigurable two-dimensional optical encoder and decoder are constructed by wavelength selective switch and optical delay lines, and reconfigurable one-dimensional optical encoder and decoder are constructed by couplers and tunable optical delay lines. Under three different turbulence conditions, bit error rates (BER) of legitimate user and eavesdropper are measured. It can be seen that under turbulence effects, BER of legitimate user in spatial- diversity is lower than that of non-diversity system. By the rapid code reconfiguration of legitimate users, the eavesdropper can only use unmatched decoder. Thus, the eavesdropping methods of code interception and brute-force searching can be avoided. Experimental results show that this scheme can ensure the reliable transmission of legitimate users, and the eavesdropper can't crack the information when the extraction ratio is 1%. Hence, reliability and physical-layer security can be enhanced simultaneously. |
| first_indexed | 2024-12-20T03:44:32Z |
| format | Article |
| id | doaj.art-69be07105fe945779dac887414c0284c |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T03:44:32Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-69be07105fe945779dac887414c0284c2022-12-21T19:54:38ZengIEEEIEEE Access2169-35362020-01-018389413894910.1109/ACCESS.2020.2975881900741610Gb/s Two-User Spatial Diversity FSO-CDMA Wiretap Channel Based on Reconfigurable Optical Encoder/DecodersJianhua Ji0https://orcid.org/0000-0002-3669-4548Zihua Zheng1Fang Peng2Jianjia Zhang3Bing Wu4https://orcid.org/0000-0002-4703-9899Ming Xu5Ke Wang6Shenzhen Key Laboratory of Communication and Information Processing, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, ChinaShenzhen Key Laboratory of Communication and Information Processing, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, ChinaShenzhen Key Laboratory of Communication and Information Processing, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, ChinaShenzhen Key Laboratory of Communication and Information Processing, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, ChinaShenzhen Key Laboratory of Communication and Information Processing, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, ChinaShenzhen Key Laboratory of Communication and Information Processing, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, ChinaShenzhen Key Laboratory of Communication and Information Processing, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, ChinaDue to the effect of atmospheric turbulence, the transmission reliability and physical-layer security of free space optical (FSO) communication system are facing many challenges. In this paper, for the first time, we design and investigate a 10 Gb/s reconfigurable FSO wiretap channel based on spatial diversity and optical code division multiple access (OCDMA). Reconfigurable two-dimensional optical encoder and decoder are constructed by wavelength selective switch and optical delay lines, and reconfigurable one-dimensional optical encoder and decoder are constructed by couplers and tunable optical delay lines. Under three different turbulence conditions, bit error rates (BER) of legitimate user and eavesdropper are measured. It can be seen that under turbulence effects, BER of legitimate user in spatial- diversity is lower than that of non-diversity system. By the rapid code reconfiguration of legitimate users, the eavesdropper can only use unmatched decoder. Thus, the eavesdropping methods of code interception and brute-force searching can be avoided. Experimental results show that this scheme can ensure the reliable transmission of legitimate users, and the eavesdropper can't crack the information when the extraction ratio is 1%. Hence, reliability and physical-layer security can be enhanced simultaneously.https://ieeexplore.ieee.org/document/9007416/Free space optical communicationoptical code division multiple accessspatial diversityatmospheric turbulence |
| spellingShingle | Jianhua Ji Zihua Zheng Fang Peng Jianjia Zhang Bing Wu Ming Xu Ke Wang 10Gb/s Two-User Spatial Diversity FSO-CDMA Wiretap Channel Based on Reconfigurable Optical Encoder/Decoders IEEE Access Free space optical communication optical code division multiple access spatial diversity atmospheric turbulence |
| title | 10Gb/s Two-User Spatial Diversity FSO-CDMA Wiretap Channel Based on Reconfigurable Optical Encoder/Decoders |
| title_full | 10Gb/s Two-User Spatial Diversity FSO-CDMA Wiretap Channel Based on Reconfigurable Optical Encoder/Decoders |
| title_fullStr | 10Gb/s Two-User Spatial Diversity FSO-CDMA Wiretap Channel Based on Reconfigurable Optical Encoder/Decoders |
| title_full_unstemmed | 10Gb/s Two-User Spatial Diversity FSO-CDMA Wiretap Channel Based on Reconfigurable Optical Encoder/Decoders |
| title_short | 10Gb/s Two-User Spatial Diversity FSO-CDMA Wiretap Channel Based on Reconfigurable Optical Encoder/Decoders |
| title_sort | 10gb s two user spatial diversity fso cdma wiretap channel based on reconfigurable optical encoder decoders |
| topic | Free space optical communication optical code division multiple access spatial diversity atmospheric turbulence |
| url | https://ieeexplore.ieee.org/document/9007416/ |
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