Open AccessSecurity strategy of parallel bit interleaved FBMC/OQAM based on four-dimensional chaos
Author(s) -
Rong Tang,
Jianxin Ren,
Juncheng Fang,
Yaya Mao,
Yafei Han,
Jiajia Shen,
Qing Zhong,
Xiangyu Wu,
Feng Tian,
Bo Liu
Publication year - 2021
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.433691
Subject(s) - computer science , encryption , qam , transmission (telecommunications) , quadrature amplitude modulation , physical layer , secure transmission , multiplexing , electronic engineering , bit error rate , computer network , telecommunications , wireless , channel (broadcasting) , engineering
A parallel bit-interleaved filter-bank multicarrier/offset quadrature amplitude modulation (FBMC/OQAM) security strategy based on four-dimensional chaos is proposed in this paper. After the QAM constellation point distribution is disturbed, the modulated FBMC bits and symbols are interleaved and encrypted to realize the improvement of the FBMC/OQAM system physical layer security performance. The chaotic sequence generated by the four-dimensional hyperchaotic system is optimized and calculated to control the disturbance process, which enhances the performance of the system against illegal malicious attacks. The parallel encryption scheme proposed in this scheme increases the encryption efficiency by 1.43 times; can provide a keyspace of 10 90 size, which effectively resists brute force attacks; and improves the physical layer security of the system. The proposed FBMC/OQAM parallel bit interleaved encryption scheme using a 5 km weakly coupled four-mode fiber achieves a 3×10 Gb/s multiple-input multiple-output-free transmission. The experimental results show that this scheme can effectively improve the security performance of the system, and combines the few-mode multiplexing technology with advanced modulation. It is a candidate for the future large-capacity and high-security optical transmission system.