A Physical-Layer Secure Coding Scheme for Indoor Visible Light Communication Based on Polar Codes
Visible light communication (VLC) can provide short-range optical wireless communication together with illumination using LED lightings. Since VLC channel is an open wireless channel, physical-layer security is desirable in order to hide secret information from unauthorized receivers, without relian...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8463605/ |
| _version_ | 1819120579034218496 |
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| author | Zhen Che Junbin Fang Zoe Lin Jiang Jin Li Shancheng Zhao Yongchun Zhong Zhe Chen |
| author_facet | Zhen Che Junbin Fang Zoe Lin Jiang Jin Li Shancheng Zhao Yongchun Zhong Zhe Chen |
| author_sort | Zhen Che |
| collection | DOAJ |
| description | Visible light communication (VLC) can provide short-range optical wireless communication together with illumination using LED lightings. Since VLC channel is an open wireless channel, physical-layer security is desirable in order to hide secret information from unauthorized receivers, without reliance on upper-layer cryptographic techniques. In this paper, a secure coding scheme based on polar codes is proposed to simultaneously achieve physical-layer security and transmission reliability for indoor VLC systems under Wyner's wiretap model. An indoor VLC degraded wiretap channel model and an indoor VLC undegraded wiretap model are analyzed to estimate the corresponding secrecy capacity with typical indoor VLC scenarios considering the requirements of illumination and reliable transmission. Then, a physical-layer secure coding scheme and an enhanced scheme are designed to provide securely reliable communication without sacrificing the illumination functionality. Numerical results show that for VLC degraded wiretap channel, the proposed coding scheme can reduce the bit error rate (BER) of main channel to nearly 0 and increase that of wiretap channel to 0.5. Therefore, the mutual information between the sender and the eavesdropper and the BER of the legitimate receiver are both decreased to nearly 0. Both the security and reliability of VLC are guaranteed by the proposed coding scheme. And the practical secrecy rate reaches 85.96% at some positions when codeword length is 2 048 bits. Furthermore, an enhanced coding scheme with a feedback channel is proposed to handle the case that the wiretap channel is not degraded with respect to the main channel. With the feedback channel, the wiretap channel can be equivalently degraded and the security can be increased gradually with the increment of the degradation level of the wiretap channel. Meanwhile, the secrecy capacities can be asymptotically achieved for indoor VLC systems. |
| first_indexed | 2024-12-22T06:22:54Z |
| format | Article |
| id | doaj.art-4510ac0468d7482798d02f540ed69b5c |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-22T06:22:54Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-4510ac0468d7482798d02f540ed69b5c2022-12-21T18:35:54ZengIEEEIEEE Photonics Journal1943-06552018-01-0110511310.1109/JPHOT.2018.28699318463605A Physical-Layer Secure Coding Scheme for Indoor Visible Light Communication Based on Polar CodesZhen Che0https://orcid.org/0000-0002-0816-7767Junbin Fang1Zoe Lin Jiang2https://orcid.org/0000-0002-8944-7444Jin Li3Shancheng Zhao4Yongchun Zhong5Zhe Chen6College of Information Science and Technology, Jinan University, Guangzhou, ChinaGuangzhou Municipal Key Laboratory of Engineering Technology on VLC, and Department of Optoelectronic Engineering, Guangdong Provincial Engineering Technology Research Center on VLC, Jinan University, Guangzhou, ChinaHarbin Institute of Technology Shenzhen Graduate School, Shenzhen, ChinaGuangzhou Municipal Key Laboratory of Engineering Technology on VLC, and Department of Optoelectronic Engineering, Guangdong Provincial Engineering Technology Research Center on VLC, Jinan University, Guangzhou, ChinaCollege of Information Science and Technology, Jinan University, Guangzhou, ChinaGuangzhou Municipal Key Laboratory of Engineering Technology on VLC, and Department of Optoelectronic Engineering, Guangdong Provincial Engineering Technology Research Center on VLC, Jinan University, Guangzhou, ChinaGuangzhou Municipal Key Laboratory of Engineering Technology on VLC, and Department of Optoelectronic Engineering, Guangdong Provincial Engineering Technology Research Center on VLC, Jinan University, Guangzhou, ChinaVisible light communication (VLC) can provide short-range optical wireless communication together with illumination using LED lightings. Since VLC channel is an open wireless channel, physical-layer security is desirable in order to hide secret information from unauthorized receivers, without reliance on upper-layer cryptographic techniques. In this paper, a secure coding scheme based on polar codes is proposed to simultaneously achieve physical-layer security and transmission reliability for indoor VLC systems under Wyner's wiretap model. An indoor VLC degraded wiretap channel model and an indoor VLC undegraded wiretap model are analyzed to estimate the corresponding secrecy capacity with typical indoor VLC scenarios considering the requirements of illumination and reliable transmission. Then, a physical-layer secure coding scheme and an enhanced scheme are designed to provide securely reliable communication without sacrificing the illumination functionality. Numerical results show that for VLC degraded wiretap channel, the proposed coding scheme can reduce the bit error rate (BER) of main channel to nearly 0 and increase that of wiretap channel to 0.5. Therefore, the mutual information between the sender and the eavesdropper and the BER of the legitimate receiver are both decreased to nearly 0. Both the security and reliability of VLC are guaranteed by the proposed coding scheme. And the practical secrecy rate reaches 85.96% at some positions when codeword length is 2 048 bits. Furthermore, an enhanced coding scheme with a feedback channel is proposed to handle the case that the wiretap channel is not degraded with respect to the main channel. With the feedback channel, the wiretap channel can be equivalently degraded and the security can be increased gradually with the increment of the degradation level of the wiretap channel. Meanwhile, the secrecy capacities can be asymptotically achieved for indoor VLC systems.https://ieeexplore.ieee.org/document/8463605/Visible light communicationpolar codesphysical-layer securitysecrecy capacity. |
| spellingShingle | Zhen Che Junbin Fang Zoe Lin Jiang Jin Li Shancheng Zhao Yongchun Zhong Zhe Chen A Physical-Layer Secure Coding Scheme for Indoor Visible Light Communication Based on Polar Codes IEEE Photonics Journal Visible light communication polar codes physical-layer security secrecy capacity. |
| title | A Physical-Layer Secure Coding Scheme for Indoor Visible Light Communication Based on Polar Codes |
| title_full | A Physical-Layer Secure Coding Scheme for Indoor Visible Light Communication Based on Polar Codes |
| title_fullStr | A Physical-Layer Secure Coding Scheme for Indoor Visible Light Communication Based on Polar Codes |
| title_full_unstemmed | A Physical-Layer Secure Coding Scheme for Indoor Visible Light Communication Based on Polar Codes |
| title_short | A Physical-Layer Secure Coding Scheme for Indoor Visible Light Communication Based on Polar Codes |
| title_sort | physical layer secure coding scheme for indoor visible light communication based on polar codes |
| topic | Visible light communication polar codes physical-layer security secrecy capacity. |
| url | https://ieeexplore.ieee.org/document/8463605/ |
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