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A fair comparison of SAC-OCDMA system configurations based on two dimensional cyclic shift code and spectral direct detection

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Abstract

This paper investigates shortcomings that limit the performance of optical code division multiple access (OCDMA) systems including the low cardinality and data rate as well as the high power at reception. The main drawback for such systems known as multiple access interference accompanying by phase induced intensity noise is also investigated to effeciencly propose a novel two dimensional cyclic shift (2D-CS) code to be implemented in non-coherent OCDMA systems. The developed code is based on a one dimensional cyclic shift (1D-CS) code previously provided by research works processing spectral amplitude coding for optical code division multiple access (SAC-OCDMA) systems. Numerical results obtained by this study are therefore compared to previous studies employing different codes like two dimensional extended double weight (2D-EDW), two dimensional flexible cross correlation/modified double weight (2D-FCC/MDW), two dimensional perfect difference (2D-PD), two dimensional diluted perfect difference (2D-DPD), two dimensional multi service (2D-MS) and two dimensional zero cross correlation/multi diagonal (2D-ZCC/MD) codes. Accordingly, it is demonstrated that the proposed 2D-CS code outperforms all codes given previously in terms of system capacity where the small increasing percentage is about 40% compared to 2D-ZCC/MD and 2D-MS. Systems using 2D-CS code can support until 203 simultaneous users with a total code length equal to 171. System performance investigation leads to a BER and Q-Factor closely to1.0E−12 and 1.0E−27, and 6.6 dB and 10.6 dB at 20 km of single mode fiber length using white light source and Laser, respectively. Furthermore, such a code can be easily adopted by OCDMA systems for a long distance up to approximately 55 and 100 km.

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Authors and Affiliations

  1. Scientific Instrumentations Laboratory(LIS), Electronics Department, Ferhat Abbas University of Setif 1, Setif, Algeria

    Mohanad Alayedi

  2. Technology of Communication Laboratory (LTC), University of Tahar Moulay, 2000, Saïda, Algeria

    Abdelhamid Cherifi

  3. Optoelectronics and Components Laboratory(LOC), Electronics Department, Ferhat Abbas University of Setif 1, Setif, Algeria

    Abdelhak Ferhat Hamida

  4. Department of IT, College of Informatics and Computing, Saudi Electronic University, Riyadh, Kingdom of Saudi Arabia

    Hichem Mrabet

  5. SER’COM Laboratory, Tunisia Polytechnic School, Carthage University, 1054, Tunis, Tunisia

    Hichem Mrabet

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  1. Mohanad Alayedi
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  4. Hichem Mrabet
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Alayedi, M., Cherifi, A., Ferhat Hamida, A. et al. A fair comparison of SAC-OCDMA system configurations based on two dimensional cyclic shift code and spectral direct detection. Telecommun Syst 79, 193–212 (2022). https://doi.org/10.1007/s11235-021-00840-8

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