Hybrid time-frequency domain chaotic interleaving for physical-layer security enhancement in OFDM-PON systems

摘要

In this paper, we propose a hybrid time-frequency domain chaotic interleaving technique for physical-layer security enhancement in orthogonal frequency division multiplexing-based passive optical network (OFDM-PON) systems. The chaotic interleaving is performed by using the discrete Baker map, which is controlled by a Henon map. The initial values and the iteration parameter of the Henon map are used as the keys of the chaotic interleaving. Encryption of a 19.2 Gbit/s 16 Quadrature amplitude modulation (QAM) OFDM signal has been successfully implemented over 30 km standard single mode fiber (SSMF) in a security enhanced OFDM-PON system.