Secure Key Distribution Strategy in OFDM-PON by Utilizing the Redundancy of Training Symbol and Digital Chaos Technique

A secure key distribution scheme for orthogonal frequency division multiplexing (OFDM) passive optical network system is proposed and experimentally demonstrated. The training symbol (TS), which is used for time synchronization and channel estimation, is formed by adopting a noise-like chaotic seque...

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Bibliographic Details
Published inIEEE photonics journal Vol. 10; no. 2; pp. 1 - 8
Main Authors Li, Shanshan, Cheng, Mengfan, Deng, Lei, Fu, Songnian, Zhang, Minming, Tang, Ming, Shum, Ping, Liu, Deming
Format Journal Article
LanguageEnglish
Published IEEE 01.04.2018
Subjects
Chaos
Correlation
Data mining
OFDM
optical communication
Orthogonal frequency division multiplexing (OFDM)
passive optical network (PON)
Passive optical networks
Security
security key distribution
Synchronization
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Summary:A secure key distribution scheme for orthogonal frequency division multiplexing (OFDM) passive optical network system is proposed and experimentally demonstrated. The training symbol (TS), which is used for time synchronization and channel estimation, is formed by adopting a noise-like chaotic sequence. The redundancy of the TS is utilized to embed secure keys. An experiment is performed, in which 7.64 Gb/s 16-quadrature-amplitude-modulation OFDM data and 28.4 Mb/s keys embedded in are successfully transmitted over 25 km standard single mode fiber. The results indicate a promising key distribution method for physical layer secure optical communication.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2018.2815001