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Performance Analysis of Multiple User Optical Code Division Multiple Access

DOI: 10.4236/opj.2014.42004, PP. 21-25

Keywords: Optical Code Division Multiple Access, Strong Interference, Weak Interference, Bit Error Rate, Optical Encoding, Laser Diode Source, Multiple Access Interference

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Abstract:

In this paper, we discuss and analyze an optical code division multiple access for multiple user system. Media access control implementation has been considered. For fulfilling the huge need of bandwidth services, technology tends to move to optical networks and three major optical systems come into existence. Code division of the optical network is most used and real concept interacted with users up to this time. Optical code division multiple access provides complete spectrum to each and every user for the time of accessing the channel. In the paper, we have proposed network architecture with optical encoder and decoder along with optical code translator which is supporting multiple user systems. We integrate the code translator with encoding and decoding of optical code to use the optical network at full extent and present the simulation validation results of 6 Gb/s 3-hop transmission by use of proposed architecture. Further, we have implemented experimentation with 6 users 3 Gb/s optical code division multiple access network. Through simulation structure, it is shown that the combination of encoding with EDFA in multiple user environment system provides improvement in bit error rate and also improves the multiple access interference. With increase of users in the network, MAI value increases and our proposed scheme controls interference in the network.

References

[1]  C.-H. Lee, S. Zhong, X. Lin and Y. J. Chen, “Proposed Planar Light Wave Circuit Design of Programmable Optical CDMA Spectral Encoder/Decoder Using Array-Waveguide Grating,” IEEE Nanostructures and Quantum dots/RF photonics for CATV, San Diego, 26-30 July 1999, pp. 1139-1140.
[2]  F. Benedetto, “On Efficient Code Acquisition of Optical Orthogonal Codes in Optical CDMA Systems,” IEEE Transactions on Communications, Vol. 58, No. 2, 2010, pp. 438-441.
http://dx.doi.org/10.1109/TCOMM.2010.02.080043
[3]  T. Srinivas, “Simulation and Performance Analysis of OCDMA Systems Based on 2-D W/T Codes,” IEEE International Conference on Advances in Systems and Measurements, Hyderabad, 16-18 December 2011, pp. 1-4.
[4]  W. C. Kwong and G.-C. Yang, “Design of Multilength Optical Orthogonal Codes for Optical CDMA Multimedia Networks,” IEEE Transactions on Communication, Vol. 50, No. 8, 2002, pp. 1258-1265
http://dx.doi.org/10.1109/TCOMM.2002.801499
[5]  A. G. Sabbagh, “Performance Analysis of Optical CDMA Systems Utilizing Optical Encoding in Presence of Interference and Receiver Noises,” Journal of Optical Communications, Vol. 32, 2011, pp. 177-186.
[6]  M. Ravi Kumar, “Design and Analysis of Three-Dimensional OCDMA Code Families,” Optical Switching and Networking, Vol. 6, 2009, pp. 243-249.
http://dx.doi.org/10.1016/j.osn.2009.08.002
[7]  L. H. Xu and Q. Q. Fan, “A New Optical Code Translation Scheme for multi-hop Network and Simulation of Multi-user Asynchronous OCDMA System,” The 9th International Conference on Optical Communications and Networks, Nanjing, 24-27 October 2010.
[8]  J. Singh, “Techniques for Reduction of Multiple Access Interference in Fiber-Optic CDMA Systems,” Journal of Engineering Research and Studies, Vol. 2, No. 2, 2011, pp. 7-10.
[9]  A. Keshavarzian and J. A. Salehi, “Multiple-Shift Code Acquisition of Opticalorthogonal Codes in Optical CDMA Systems,” IEEE Transactions on Communications, Vol. 53, No. 4, 2005, pp. 687-697.
http://dx.doi.org/10.1109/TCOMM.2005.843456
[10]  R. S. Kaler, A. Sharma and T. S. Kamal, “Approximate and Exact Small Signal Analysis for Single Mode Fiber near Zero Dispersion Wavelengths with Higher Order Dispersion,” Fiber and Integrated Optics, Taylor and Francis, Vol. 21, 2002, pp. 391-415.
[11]  Rajneesh Randhawa, S. Singh, J. S Sohal and R. S. Kaler “Wavelength Converter Using Semiconductor Optical Amplifier Mach-Zender interferometer based on XPM at 40 Gb/s for future transport networks,” Fiber and Integrated Optics, Vol. 28, No. 2, 2009, pp 154-169.
http://dx.doi.org/10.1080/01468030802213637
[12]  S. Khazraei and M. R. Pakravan, “Comparison of AIr and IEEE 802.11 with optical CDMA in Wireless Infrared Communication,” ICT 2008 International Conference on Telecommunications, St. Petersburg, 16-19 June 2008, pp. 1-5.

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