Encrypted image transmission in OFDM-based VLC systems using symbol scrambling and chaotic DFT precoding

Wang, Zhongpeng; Wang, Ziqing; Chen, Shoufa

doi:10.1016/j.optcom.2018.09.045

Cited by 11 publications

(12 citation statements)

References 28 publications

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“…5, to detect the current OFDM frame S ( ), with index th , Eavesdropper requires to detect the previous OFDM frame S −1 ( ), with index ( − 1) th , to generate − which was employed to encrypt and spread the current OFDM frame S ( ), accordingly, the complete historical OFDM signals are required to detect the subsequent signal. Unlike the methods in [33]- [37], where they provide static chaotic keys with statistical characteristics that are helpful for the malicious nodes, our method provides dynamic cypher keys, associated with the random input data, that can destroy this type of (23) statistics, therefore our method supports high security against statistical attacks.…”

Section: System Designmentioning

confidence: 99%

“…Despite the confidentiality support, these techniques need to estimate the channel or physical position of the eavesdropper throughout communication, which involves an elaborate implementation. In [25]- [37], authors proposed secret key-based security techniques to enhance the confidentiality of VLC networks. These techniques provide computational security and have lower complexity when compared with keyless security techniques.…”

Section: Introductionmentioning

confidence: 99%

“…These techniques provide computational security and have lower complexity when compared with keyless security techniques. Although various methods for physical-layer security, reviewed in [4], have been proposed to enhance the confidentiality of VLC to prevent passive eavesdropping [5]- [37], no method has been proposed to enhance the availability of VLC. In this work, we consider also improving the availability of VLC networks to enhance the security against jamming attacks.…”

Section: Introductionmentioning

confidence: 99%

“…Orthogonal frequency-division multiplexing (OFDM) is effective for communication because of its immunity to multipath fading and its high spectral efficiency. Security methods for OFDM based on VLC networks have been proposed in [27]- [37]. Al-Moliki et al [27]- [32] proposed to generate secret keys from the real-valued bipolar samples of the optical OFDM scheme for encrypting the signal upon transmission.…”

Section: Introductionmentioning

confidence: 99%

“…Al-Moliki et al [27]- [32] proposed to generate secret keys from the real-valued bipolar samples of the optical OFDM scheme for encrypting the signal upon transmission. Wang et al [33], [35], [37] proposed chaotic encryption methods for encrypting the images input type. Yang et al [34] proposed a chaotic encryption method to secure non-orthogonal multiple access (NOMA)-based VLC systems.…”

Section: Introductionmentioning

confidence: 99%

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Improving Availability and Confidentiality via Hyperchaotic Baseband Frequency Hopping Based on Optical OFDM in VLC Networks

2020

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The security in visible-light communication (VLC) networks has recently gained attention. This work presents a hyperchaotic baseband frequency hopping method based on optical orthogonal frequency-division multiplexing (Hyperchaos-BB-FH-OOFDM) that can enhance both confidentiality and availability in VLC networks. A four-dimensional hyperchaotic scheme is employed for chaotic mapping. The proposed method exploits the random feature of the input data and chaotic codes to improve the confidentiality against correlation and statistical attacks and to improve the availability against illumination, disguised, and noise jamming. Using the chaotic scheme, the bipolar real OFDM samples are exploited to create dynamic cypher keys and spreading codes that are updated at each frame throughout the entire session, leading to high security against malicious attacks. The proposed method employs a four-fold encryption approach that involves chaotic frequency/time-domain scrambling of OFDM subcarriers, chaotic phase scrambling of frequency-domain subcarriers, and chaotic spreading of the OFDM signals upon transmission. According to the results, in addition to enhancing the confidentiality and availability, the method supports multiplexing, reduces the peak-to-average-power ratio of the OFDM signal, and improves the bit error rate performance for OFDM-based VLC networks.

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Section: System Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improving Availability and Confidentiality via Hyperchaotic Baseband Frequency Hopping Based on Optical OFDM in VLC Networks

2020

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Graphene Readout Silicon‐Based Microtube Photodetectors for Encrypted Visible Light Communication

Zhang,

Cai,

et al. 2024

Advanced Materials

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The implementation of an advanced light receiver is imperative for the widespread application of visible light communication. However, the integration of multifunctional and high‐performance visible light receivers is still limited by device structure and system complexity. Herein, a graphene‐readout silicon‐based microtube photodetector is proposed as the receiver for omnidirectional Mbps‐level visible light communication. The integration of graphene‐semiconductor material systems simultaneously ensures the effective absorption of incident light and rapid readout of photogenerated carriers, and the device exhibits an ultrafast response speed of 75 ns and high responsivity of 6803 A W−1. In addition, the microtube photodetector realizes the omnidirectional light‐trapping and enhanced polarization photodetection. As the receiving end of the visible light communication system, the microtube photodetector achieves a data rate of up to 778 Mbps, a field of view of 140°, and the encrypted visible light communication of polarized light, providing a new possibility for the future development of the internet of things and information security.

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Dynamic hyperchaotic key generation using optical orthogonal frequency division multiplexing‐based visible light communication networks

Alresheedi

Al‐Moliki

Al‐Harthi

et al. 2022

IEEJ Transactions Elec Engng

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This paper introduces an optical orthogonal frequency division multiplexing (OFDM)-based hyperchaotic key generation encryption approach that can improve confidentiality in visible light communication (VLC) networks. Using a hyperchaotic four-dimensional method, the bipolar real-valued OFDM signal can be used for constructing dynamic cypher keys modified at every frame over the communication time, resulting in a superior degree of protection against statistical and correlation attacks. In accordance with our findings, this approach decreases the ratio of peak-to-average power of the transmitted signal, and enhances the bit error rate efficiency and secrecy capacity of the OFDM-based VLC network, which improves confidentiality.

show abstract

Encrypted image transmission in OFDM-based VLC systems using symbol scrambling and chaotic DFT precoding

Cited by 11 publications

References 28 publications

Improving Availability and Confidentiality via Hyperchaotic Baseband Frequency Hopping Based on Optical OFDM in VLC Networks

Improving Availability and Confidentiality via Hyperchaotic Baseband Frequency Hopping Based on Optical OFDM in VLC Networks

Graphene Readout Silicon‐Based Microtube Photodetectors for Encrypted Visible Light Communication

Dynamic hyperchaotic key generation using optical orthogonal frequency division multiplexing‐based visible light communication networks

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