Lasers, Fiber Optics, and Communications

Physically secured orthogonal frequency division multiplexing–passive optical network employing noise-based encryption and signal recovery process

[+] Author Affiliations
Wei Jin, Chongfu Zhang, Weicheng Yuan

University of Electronic Science and Technology of China, Key Lab of Optical Fiber Sensing and Communication Networks, and School of Communication and Information Engineering, No. 2006, Xiyuan Avenue, West Hi-Tech Zone, Chengdu, Sichuan 611731, China

Opt. Eng. 55(2), 026103 (Feb 01, 2016). doi:10.1117/1.OE.55.2.026103
History: Received October 11, 2015; Accepted January 5, 2016
Text Size: A A A

Abstract.  We propose a physically enhanced secure scheme for direct detection–orthogonal frequency division multiplexing–passive optical network (DD-OFDM-PON) and long reach coherent detection–orthogonal frequency division multiplexing–passive optical network (LRCO-OFDM-PON), by employing noise-based encryption and channel/phase estimation. The noise data generated by chaos mapping are used to substitute training sequences in preamble to realize channel estimation and frame synchronization, and also to be embedded on variable number of key-selected randomly spaced pilot subcarriers to implement phase estimation. Consequently, the information used for signal recovery is totally hidden as unpredictable noise information in OFDM frames to mask useful information and to prevent illegal users from correctly realizing OFDM demodulation, and thereby enhancing resistance to attackers. The levels of illegal-decryption complexity and implementation complexity are theoretically discussed. Through extensive simulations, the performances of the proposed channel/phase estimation and the security introduced by encrypted pilot carriers have been investigated in both DD-OFDM and LRCO-OFDM systems. In addition, in the proposed secure DD-OFDM/LRCO-OFDM PON models, both legal and illegal receiving scenarios have been considered. These results show that, by utilizing the proposed scheme, the resistance to attackers can be significantly enhanced in DD-OFDM-PON and LRCO-OFDM-PON systems without performance degradations.

© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Wei Jin ; Chongfu Zhang and Weicheng Yuan
"Physically secured orthogonal frequency division multiplexing–passive optical network employing noise-based encryption and signal recovery process", Opt. Eng. 55(2), 026103 (Feb 01, 2016). ; http://dx.doi.org/10.1117/1.OE.55.2.026103


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.