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Secure and private NOMA VLC using OFDM with two-level chaotic encryption.
Optics Express
|January 18, 2019
Summary
This study introduces a secure and private visible light communication (VLC) system using non-orthogonal multiple access (NOMA). The system enhances security for legitimate users and ensures privacy among them, verified through experiments.
Area of Science:
- Computer Science
- Electrical Engineering
- Cryptography
Background:
- Visible Light Communication (VLC) offers high bandwidth potential.
- Non-Orthogonal Multiple Access (NOMA) enhances spectral efficiency in wireless systems.
- Ensuring security and privacy in shared communication systems is a growing challenge.
Purpose of the Study:
- To propose and demonstrate a novel secure and private NOMA-based VLC system.
- To enhance both user security against eavesdroppers and inter-user privacy.
- To address the limitations of existing VLC systems regarding simultaneous security and privacy.
Main Methods:
- Utilizing Orthogonal Frequency Division Multiplexing (OFDM) modulation.
- Implementing a two-level chaotic encryption scheme for data protection.
- Conducting an experimental setup with legitimate users and an eavesdropper.
Main Results:
- Successful experimental verification of the proposed NOMA VLC system's feasibility.
- Demonstrated simultaneous improvement in security and privacy.
- Validation of the two-level chaotic encryption's effectiveness.
Conclusions:
- The proposed system effectively achieves secure and private communication in NOMA VLC networks.
- This work represents a significant advancement in securing VLC systems.
- The implemented encryption scheme provides robust protection for legitimate users and enhances privacy.
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