Security enhanced underwater visible light communication system based on chaotic phase scrambling and conjugate frequency hopping

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...