Abstract
We propose a novel security communication scheme for underwater visible light communication (UVLC) based on frequency domain symmetrical zero-padding and phase scrambling. The security key is a logistic mapping generated by chaos mapping. Robust security performance is experimentally demonstrated by a PAM-8 modulated UVLC system over 1.2m underwater transmission link. The maximum data rate can be achieved at 2.025Gb/s under 7% hard decision forward error correction (HD-FEC) limit of 3.8×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> , clearly verifying the feasibility of the proposed scheme as a promising solution in future UVLC system.
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