Abstract
Due to massive parallelism, huge storage, and ultralow power consumption characteristics of deoxyribonucleic acid (DNA), we propose a secure orthogonal frequency-division multiple access passive optical network (OFDMA-PON), using chaos encryption and DNA encoding. In this scheme, the transmitted bit data are interleaved according to DNA operation rules, and the encoding and operation rules are randomly controlled by using a chaotic map. This DNA encoding can improve the complexity and the random characteristic of the chaotic encrypted sequences. A physical layer secures OFDMA-PON system with 36.77-Gb/s downstream signal, and the 15.45-Gb/s upstream signal is successfully experimentally demonstrated. The experimental results verify that the chaos and DNA encoding based physical layer security enhancement technique can suggest an effective solution for future physically secured OFDMA networks.
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