Photonic Network Communications

, Volume 37, Issue 1, pp 63–74 | Cite as

Performance enhancement of the 3D OCDMA system by using dynamic cyclic shift and multi-diagonal codes

  • Nabiha Jellali
  • Monia NajjarEmail author
  • Moez Ferchichi
  • Vijay Janyani
Original Paper


A new three-dimensional (3D) code is developed for spectral/time/spatial optical code division multiple access (OCDMA) system namely 3D dynamic cyclic shift/multi-diagonal (3D-DCS/MD). Its construction is based on the dynamic cyclic shift code for spectral and temporal encoding and multi-diagonal code for spatial one. The data of users are retrieved correctly using the MAI cancelation property. Compared with the OCDMA systems using 3D perfect/multi-diagonal, and 3D perfect difference, the 3D-DCS/MD system has a low phase-induced intensity noise. Hence, this system overcomes these codes in terms of data rate, required source power and spectral width. Also, it can accommodate more than 200 users at 622 Mbps.


Multi-diagonal (MD) code Dynamic cyclic shift (DCS) code Multi-access interference (MAI) Perfect difference (PD) code 


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Nabiha Jellali
    • 1
  • Monia Najjar
    • 1
    • 2
    Email author
  • Moez Ferchichi
    • 1
  • Vijay Janyani
    • 3
  1. 1.National Engineering School of Tunis (ENIT), Communications Systems Laboratory (SysCom)University of Tunis El Manar (UTM)TunisTunisia
  2. 2.University of Tunis El Manar Higher Institute of Computer SciencesTunisTunisia
  3. 3.Department of Electronics and CommunicationMalaviya National Institute of TechnologyJaipurIndia

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