Security enhanced underwater visible light communication system based on chaotic phase scrambling and conjugate frequency hopping
Zhilan Lü, Chao Shen, Jianyang Shi, Nan Chi
Abstract
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.
Topics & Concepts
ScramblingChaoticFrequency-hopping spread spectrumBit error rateTransmission (telecommunications)Visible light communicationComputer scienceOpticsPhysicsEncryptionPhase (matter)AmplitudeSpread spectrumTelecommunicationsDecoding methodsAlgorithmCode division multiple accessComputer networkQuantum mechanicsArtificial intelligenceLight-emitting diodeOptical Wireless Communication TechnologiesUnderwater Vehicles and Communication SystemsOptical Network Technologies