Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Quantum Electronics and Laser Science Conference

Advanced coding techniques for asynchronous fiber-optical CDMA

E. Narimanov, Ben Wu

Published Dec 10, 2005• 8 citations
Publisher

Abstract

We develop new coding methods for asynchronous optical CDMA systems with increased spectral efficiency and better BER performance. Furthermore, our approach allows random variations of the transmission rate, thus improving the physical level security.
DOI
10.1109/qels.2005.1549276

Related papers

Novel temporal/spectral coding technique based on fiber Bragg gratings for fiber optic CDMA application

Xu Wang, K.T. Chan, Yu-Chih Liu +2 more

A novel hybrid temporary spectral coding technique based on fiber Bragg gratings for fiber-optic CDMA application is proposed and demonstrated experimentally for the first time to our knowledge. Significant improvement in fiber-optic CDMA networks at high bit rates is expected.

Optical Fiber Communication Conference•Jan 20, 2003•12 citations

A novel spectral coding technique based on the special chirped fiber Bragg gratings for fiber optic CDMA

Heun-Duk Ku, Sang In Kim, Se Kang Park +4 more

A novel spectral coding technique and the algebraic algorithm based on special chirped fiber Bragg grating for fiber optic CDMA application are proposed and demonstrated experimentally for the first time.

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)•Nov 13, 2002•0 citations

Steganographic fiber-optic transmission using coherent spectral-phase-encoded optical CDMA

Bernard B. Wu, Anjali Agrawal, Ivan Glesk +3 more

Stealth communication using coherent SPE-OCDMA is demonstrated. The coherent approach can provide higher spectral efficiency than incoherent optical CDMA.

Conference on Lasers and Electro-Optics•May 1, 2008•24 citations

Emerging Optical CDMA Techniques and Applications

Jawad A. Salehi

International Journal of Optics and Photonics•Jun 10, 2007•21 citations

Secure performance analysis of optical CDMA systems based on secrecy capacity

Yeteng Tan, Tao Pu, Jilin Zheng +3 more

Optical CDMA transmission systems can not only increase system capacity, but also achieve physical-layer security against fiber tapping attacks. In this paper, we examine the information-theoretic security of optical CDMA systems by evaluating the trade off between the achieved information capacity and the confidentiality. In particular, we established a wiretap channel model of optical CDMA systems, based on which we have evaluated the impacts of key system parameters, such as the type of code words, the number of users M , the code lengths N and the input optical power P , on the system security. Our results indicate that key system parameters play an important role and choosing suitable values of these system parameters will be helpful to improve the secure performance of optical CDMA systems to some degree. For example, choosing the code words whose cross-correlation λ values are smaller, increasing the code lengths N or the input optical power P and reducing the number of users M properly can all be used to improve the secure performance of optical CDMA systems.

CRC Press eBooks•Nov 15, 2018•1 citation

Novel Secure Platform for Avionic Applications Based on Optical CDMA

Ivan Glesk, Y-K. Huang, Brian L. Uhlhorn +1 more

We designed, built, and demonstrated a novel optical CDMA-based platform running at OC-24 data rate, with three users and one eavesdropper. Error-free operation with BER better than 10-12was achieved. Based on our simulations, the testbed can support ten simultaneous users with BER-9. Novel "dual-code" OCDMA transmitter and receiver were designed and demonstrated to deliver more secure data transmission approaching One-time Pad security by implementing optical layer XOR and having the capability to perform bit-to-bit code swapping. The testbed was developed under DARPA contract and delivered to Lockheed Martin for further performance evaluations in different avionic applications.

IEEE Avionics, Fiber-Optics and Photonics Technology Conference (AVFOP)•Oct 1, 2007•1 citation
Optical CDMA transmission systems can not only increase system capacity, but also achieve physical-layer security against fiber tapping attacks. In this paper, we examine the information-theoretic security of optical CDMA systems by evaluating the trade off between the achieved information capacity and the confidentiality. In particular, we established a wiretap channel model of optical CDMA systems, based on which we have evaluated the impacts of key system parameters, such as the type of code words, the number of users M , the code lengths N and the input optical power P , on the system security. Our results indicate that key system parameters play an important role and choosing suitable values of these system parameters will be helpful to improve the secure performance of optical CDMA systems to some degree. For example, choosing the code words whose cross-correlation λ values are smaller, increasing the code lengths N or the input optical power P and reducing the number of users M properly can all be used to improve the secure performance of optical CDMA systems.
We designed, built, and demonstrated a novel optical CDMA-based platform running at OC-24 data rate, with three users and one eavesdropper. Error-free operation with BER better than 10-12was achieved. Based on our simulations, the testbed can support ten simultaneous users with BER-9. Novel "dual-code" OCDMA transmitter and receiver were designed and demonstrated to deliver more secure data transmission approaching One-time Pad security by implementing optical layer XOR and having the capability to perform bit-to-bit code swapping. The testbed was developed under DARPA contract and delivered to Lockheed Martin for further performance evaluations in different avionic applications.