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24 November 2023 Physical layer encryption scheme using chaotic index permutation based on M-ary bit reversal mechanism in CO-OFDM system
Le Liu, Xianfeng Tang, Xiaoguang Zhang
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Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129352U (2023) https://doi.org/10.1117/12.3007689
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China
Abstract
This study proposes a physical layer encryption scheme for coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems utilizing index permutation based on the M-ary bit reversal mechanism using chaos. The original signal's bit data is subjected to comprehensive bit scrambling within the bit domain for OFDM signals, accomplished through a series of operations including adaptive filling, bit reversal, and suffix addition, all driven by three keys generated from two random chaos systems. To assess the effectiveness of this enhanced security scheme, a simulation is carried out on a 16QAM CO-OFDM system with a net data rate of 213 Gb/s, operating in a back-to-back (BTB) transmission configuration. The results unequivocally demonstrate the system's robust security performance, with an unauthorized user unable to extract any meaningful information, as evidenced by a bit error rate (BER) of 0.5. The key space is up to 10120, which indicates the strong resistance to attack for encryption system. Additionally, the maintained peak to average power ratio (PAPR) illustrates that the proposed physical layer encryption scheme can preserve good system performance during the enhancement of security.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Le Liu, Xianfeng Tang, and Xiaoguang Zhang "Physical layer encryption scheme using chaotic index permutation based on M-ary bit reversal mechanism in CO-OFDM system", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129352U (24 November 2023); https://doi.org/10.1117/12.3007689
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KEYWORDS
Chaos
Orthogonal frequency division multiplexing
Computer security
Telecommunications
Data transmission
Digital signal processing
Optical coherence
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