Open AccessJoint robustness security in optical OFDM access system with Turbo-coded subcarrier rotation
Author(s) -
Lijia Zhang,
Bo Liu,
Xiangjun Xin,
Yongjun Wang
Publication year - 2015
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.23.000013
Subject(s) - subcarrier , orthogonal frequency division multiplexing , computer science , turbo code , robustness (evolution) , electronic engineering , puncturing , multiplexing , encryption , telecommunications , channel (broadcasting) , computer network , decoding methods , engineering , biochemistry , chemistry , gene
This paper proposes a novel robust physical secure method for optical orthogonal frequency division multiplexing (OFDM) access system based on Turbo-coded subcarrier rotation. It can realize a secure communication while keep robustness to channel noise. The subcarrier rotation is controlled by the interleaver module of Turbo coding, which is under the charge of Logistic map. The random puncturing can further enhance the security. The channel feedback can ensure the puncturing module working at a suitable coding rate. A 72.28 Gb/s encrypted 16QAM-OFDM signal is successfully demonstrated in the experiment. The results show robust performance under different channel noise conditions and good resistance to illegal optical network unit (ONU).