Secure Transmission of Optical DFT-S-OFDM Data Encrypted by Digital Chaos
Open Access
- 13 May 2016
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Journal
- Vol. 8 (3), 1-9
- https://doi.org/10.1109/jphot.2016.2564438
Abstract
This paper proposes and demonstrates a physical layer security-enhanced transmission scheme for discrete Fourier transform spread orthogonal frequency-division multiplexing (DFT-S-OFDM) signals in a passive optical network. During the DFT-S-OFDM transmission, the reconfigurable DFT matrix, the subcarrier allocation, and the training sequence for OFDM symbol synchronization are well encrypted by digital chaotic sequences generated via a 4-D hyperdigital chaos, which provides a huge key space of ~10 45 . Secure transmission of 13.3-Gb/s encrypted DFT-S-OFDM signals is demonstrated over a 20-km standard single-mode fiber, which proves the excellent confidentiality of the proposed secure DFT-S-OFDM transmission. Moreover, the receiver sensitivity is improved ~2 dB (BER@10 -3 ), which is due to the effective reduction of peak-to-average power ratio via DFT precoding. In addition, this scheme has the advantages of low computational complexity and has no requirement of redundant sideband information.Keywords
Funding Information
- National “973” Project of China (2012CB315602)
- National Nature Science Fund of China (61571291, 61132004, 61431009, 61221001)
- National “863” Hi-tech Project of China (2013AA014503)
This publication has 7 references indexed in Scilit:
- Chaos‐based selected mapping scheme for physical layer security in OFDM‐PONElectronics Letters, 2015
- Chaos-Based Partial Transmit Sequence Technique for Physical Layer Security in OFDM-PONIEEE Photonics Technology Letters, 2015
- Security-Enhanced OFDM-PON Using Hybrid Chaotic SystemIEEE Photonics Technology Letters, 2014
- Reducing the Peak-to-Average Power Ratio of OFDM Signals Through PrecodingIEEE Transactions on Vehicular Technology, 2007
- TDM-PON Security Issues: Upstream Encryption is NeededPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- SOME BASIC CRYPTOGRAPHIC REQUIREMENTS FOR CHAOS-BASED CRYPTOSYSTEMSInternational Journal of Bifurcation and Chaos, 2006
- A WDM-based optical access network for wide-area gigabit access servicesIEEE Communications Magazine, 2003