title: Physical secure enhancement in optical OFDMA-PON based on two-dimensional scrambling.
abstract: This paper proposes a novel physical-enhanced chaotic secure strategy for optical OFDMA-PON based on two-dimensional (2-D) scrambling. In order to enhance the physical security, a multi-layer chaotic mapping is proposed to generate the scrambling vectors. It can enhance the chaotic characteristic of Logistic mapping and increase the key space. Furthermore, the 2-D scrambling jointly utilizing frequency subcarriers and time-slots can improve the system resistance to eavesdropper. The feasibility of 15.6 Gb/s 2-D encrypted 64QAM-OFDM downstream signal has been successfully demonstrated in the experiment. The robustness of the proposed method shows its prospect in future OFDM access network.
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.
authors.forename: Lijia
authors.initials: L
authors.lastname: Zhang
authors.forename: Xiangjun
authors.initials: X
authors.lastname: Xin
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Yin