Open AccessMulti scrolls chaotic encryption scheme for CO-OFDM-PON
Author(s) -
Yuanxiang Chen,
Yongtao Huang,
Ying Han,
Jia Fu,
Kaile Li,
Yitong Li,
Junsheng Yu
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.392448
Subject(s) - encryption , multiple encryption , 40 bit encryption , key space , probabilistic encryption , computer science , orthogonal frequency division multiplexing , 56 bit encryption , transmission (telecommunications) , algorithm , chaotic , theoretical computer science , computer network , channel (broadcasting) , telecommunications , artificial intelligence
In this paper, we propose and experimentally demonstrate a novel multi scrolls chaotic encryption scheme for CO-OFDM-PON. We analyze the principle of 3-dimension encryption scheme and discuss its encryption complexity. Compared with the previous hyper Chen chaotic encryption scheme, the proposed encryption algorithm can realize dynamic constellation point mapping of QAM signal with lower encryption complexity. We also compare the transmission performances of the two chaotic encryption schemes. The results show that the proposed multi scrolls scheme has better BER performance because it can decrease the peak to average power ratio (PAPR) of OFDM. What is more, the proposed encryption scheme is very sensitive to the initial secure key and a tiny discrepancy as small as 10 -17 would lead to a completely different sequence. The high sensibility to the initial value can effectively increase encryption level and the key space of the multi scrolls encryption scheme is 10 6 times of that hyper Chen. Further, to verify the effectiveness of the proposed encryption algorithm, encrypted transmission of a digital picture in 80 km SSMF is carried out.