Chaotic Non-Orthogonal Matrix-Based Encryption for Secure OFDM-PONs

We propose and experimentally demonstrate a novel encryption scheme to enhance the physical layer security in broadcast passive optical networks (PONs). We exploit, for the first time, a new dimension using non-orthogonality for encryption. Different from the conventional masking of data, the propos...

Full description

Saved in:
Bibliographic Details
Published inIEEE photonics technology letters Vol. 33; no. 20; pp. 1127 - 1130
Main Authors Hu, Zhouyi, Song, Peiji, Chan, Chun-Kit
Format Journal Article
LanguageEnglish
Published New York IEEE 15.10.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Bandwidth
Chaos encryption
Eavesdropping
Encryption
Floors
OFDM
Optical communication
Orthogonal Frequency Division Multiplexing
orthogonal frequency division multiplexing (OFDM)
Orthogonality
Passive optical networks
passive optical networks (PONs)
Precoding
Receivers
Security
Online AccessGet full text

Cover

More Information
Summary:We propose and experimentally demonstrate a novel encryption scheme to enhance the physical layer security in broadcast passive optical networks (PONs). We exploit, for the first time, a new dimension using non-orthogonality for encryption. Different from the conventional masking of data, the proposed chaotic non-orthogonal matrix (CNOM) can also dynamically scramble the number of subcarriers in an orthogonal frequency division multiplexing (OFDM) signal while maintaining the same bandwidth to further deceive potential eavesdroppers. By simultaneously using faster-than-Nyquist signaling and redundant precoding, the proposed scheme can achieve the compromise between spectral efficiency (SE) and resilience against system impairments, while increasing the overall key space. We then carry out a proof-of-concept experiment to verify the feasibility of the proposed CNOM-based encryption. Results showed that the transmission performance could be improved in addition to the security enhancement.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2021.3109029