Open AccessPhysical secure enhancement in optical OFDMA-PON based on two-dimensional scrambling
Author(s) -
Lijia Zhang,
Xiangjun Xin,
Bo Liu,
Xiaoli Yin
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.000b32
Subject(s) - scrambling , computer science , chaotic , physical layer , orthogonal frequency division multiplexing , encryption , key space , robustness (evolution) , electronic engineering , computer network , algorithm , telecommunications , channel (broadcasting) , artificial intelligence , engineering , wireless , biochemistry , chemistry , gene
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.