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Joint robustness security in optical OFDM access system with Turbo-coded subcarrier rotation
This study introduces a robust physical security method for optical orthogonal frequency division multiplexing (OFDM) access systems using Turbo-coded subcarrier rotation. The technique ensures secure communication and resilience against channel noise and unauthorized access.
Area of Science:
- Optical communication systems
- Information security
- Signal processing
Background:
- Optical Orthogonal Frequency Division Multiplexing (OFDM) systems are susceptible to security threats.
- Robustness against channel noise is crucial for reliable optical access networks.
Purpose of the Study:
- To propose a novel robust physical secure method for optical OFDM access systems.
- To enhance communication security while maintaining robustness to channel noise.
Main Methods:
- Utilizing Turbo-coded subcarrier rotation for encryption.
- Employing a Logistic map to control subcarrier rotation via the Turbo coding interleaver.
- Implementing random puncturing for enhanced security, regulated by channel feedback for optimal coding rates.
Main Results:
- Demonstration of a 72.28 Gb/s encrypted 16QAM-OFDM signal.
- Exhibited robust performance under various channel noise conditions.
- Showcased effective resistance against illegal Optical Network Unit (ONU) access.
Conclusions:
- The proposed Turbo-coded subcarrier rotation method offers a viable solution for secure and robust optical OFDM access.
- The system effectively balances high-speed data transmission with strong physical layer security.
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