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Comparison of novel coding techniques for a fixed wavelength hopping SAC-OCDMA

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Abstract

The optical code division multiple access (OCDMA), the most advanced multiple access technology in optical communication has become significant and gaining popularity because of its asynchronous access capability, faster speed, efficiency, security and unlimited bandwidth. Many codes are developed in spectral amplitude coding optical code division multiple access (SAC-OCDMA) with zero or minimum cross-correlation properties to reduce the multiple access interference (MAI) and Phase Induced Intensity Noise (PIIN). This paper compares two novel SAC-OCDMA codes in terms of their performances such as bit error rate (BER), number of active users that is accommodated with minimum cross-correlation property, high data rate that is achievable and the minimum power that the OCDMA system supports to achieve a minimum BER value. One of the proposed novel codes referred in this work as modified random diagonal code (MRDC) possesses cross-correlation between zero to one and the second novel code referred in this work as modified new zero cross-correlation code (MNZCC) possesses cross-correlation zero to further minimize the multiple access interference, which are found to be more scalable compared to the other existing SAC-OCDMA codes. In this work, the proposed MRDC and MNZCC codes are implemented in an optical system using the optisystem version-12 software for the SAC-OCDMA scheme. Simulation results depict that the OCDMA system based on the proposed novel MNZCC code exhibits better performance compared to the MRDC code and former existing SAC-OCDMA codes. The proposed MNZCC code accommodates maximum number of simultaneous users with higher data rate transmission, lower BER and longer traveling distance without any signal quality degradation as compared to the former existing SAC-OCDMA codes.

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Acknowledgments

The authors would like to extend their sincere appreciation to the all India council of technical education (AICTE) for the funding of this research through the research project number. 20/AICTE/RIFD/RPS (POLICY-II) 2/2012-13.

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  1. Indira Gandhi Institute of Technology, Sarang, Odisha, India

    Urmila Bhanja & Satyasen Panda

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  1. Urmila Bhanja
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  2. Satyasen Panda
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Correspondence to Urmila Bhanja.

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Bhanja, U., Panda, S. Comparison of novel coding techniques for a fixed wavelength hopping SAC-OCDMA. Photon Netw Commun 33, 179–193 (2017). https://doi.org/10.1007/s11107-016-0632-5

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  • DOI: https://doi.org/10.1007/s11107-016-0632-5

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