摘要
We propose an encryption technique for underwater visible light communication[UVLC]based on chaotic phase scrambling[PS]and conjugate frequency hopping[CFH].The technique is experimentally tested using an 8-level pulse amplitude modulation[PAM-8]and a 1.2 m underwater link.The security key of the phase scrambling code is generated according to a logistic map,and the frequency hopping is achieved by adding the same zero frequency points to the signal spectrum.The maximum transmission rate of 2.1 Gbit/s is measured with bit-error-rate[BER]below 7%the hard-decision forward error correction[HD-FEC]threshold of 3.8×10^(-3).
作者
卢芝蓝
沈超
施剑阳
迟楠
Zhilan Lu;Chao Shen;Jianyang Shi;Nan Chi(Key Laboratory for Information Science of Electromagnetic Waves(MoE),Department of Communication Science and Engineering,Fudan University,Shanghai 200433,China;Research Center of Low-Earth-Orbit Satellite Communication and Applications,Shanghai 200433,China)
基金
supported by the National Key Research and Development Program of China(No.2022YFB2802803)
the National Natural Science Foundation of China(Nos.61925104,62031011,and 62201157)
the Major Key Project of PCL。
