Spectral Amplitude Coding Optical CDMA: Performance Analysis of PIIN Reduction Using VC Code Family
Multi-user interference (MUI) is the main reason of system deterioration in the Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) system. MUI increases with the number of simultaneous users, resulting into higher probability bit rate and limits the maximum number of simultaneous users. On the other hand, Phase induced intensity noise (PIIN) problem which is originated from spontaneous emission of broad band source from MUI severely limits the system performance should be addressed as well. Since the MUI is caused by the interference of simultaneous users, reducing the MUI value as small as possible is desirable. In this paper, an extensive study for the system performance specified by MUI and PIIN reducing is examined. Vectors Combinatorial (VC) codes families are adopted as a signature sequence for the performance analysis and a comparison with reported codes is performed. The results show that, when the received power increases, the PIIN noise for all the codes increases linearly. The results also show that the effect of PIIN can be minimized by increasing the code weight leads to preserve adequate signal to noise ratio over bit error probability. A comparison study between the proposed code and the existing codes such as Modified frequency hopping (MFH), Modified Quadratic- Congruence (MQC) has been carried out.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1334289Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2118
 J. A. Salehi, "Code division multiple access techniques in optical fiber networkÔÇöPar I: Fundamental principles," IEEE Trans. Commun., vol.37, pp. 824-833, Augst 1989.
 A. Stok and E. H. Sargent, Lighting the local network: Optical code division multiple access and quality of service provisioning, IEEE Network, vol. 14, no. 6, pp. 42-46, Nov. 2000.
 H. Fathallah et al, IEEE/OSA Journal of Lightwave Technology, vol. 17, no. 3, pp. 397-405, 1999.
 M. Kavehrad, and D. Zaccarh, "Optical Code-Division-Multiplexed Systems Based on Spectral Encoding of Noncoherent Sources," Journal ofLightwave Technology, vol. 13, March 1995
 Ivan B. Djordjevic and Bane Vasic, "Combinatorial Constructions of Optical Orthogonal Codes for OCDMA Systems". Journal of Lightwave Technology, vol. 21, September 2003.
 Zou Wei, H. M. H. Shalaby, H. Ghafouri-Shiraz, "Modified Quadratic Congruence codes for Fiber Bragg-Grating-Based SAC-OCDMA," Journal of Lightwave Technology, vol. 50, , pp. 1209-1212, August 2002.
 Zou Wei, H. Ghafouri-Shiraz, "Codes for Spectral-Amplitude- Coding Optical CDMA Systems," Journal of Lightwave Technology, Vol. 50, pp. 1209-1212, August 2002.
 S.A.Aljunid, ,M.Ismail, A.R.Ramli, Borhanuddin M. Ali, and Mohamad Khazani Abdullah, "A New Family of Optical Code Sequences for Spectral-Amplitude-Coding Optical CDMA Systems" IEEE Photonics Technology Letters, vol. 16, October 2004
 Mohamad Khazani Abdullah , Feras N. Hasoon , S.A. Aljunid , Sahbudin Shaari," Performance of OCDMA systems with new spectral direct detection (SDD)technique using enhanced double weight (EDW) code" ScienceDirect, Optics Communications, vol . 281, pp 4658-4662, June 2008.
 Chao-Chin Yang "Hybrid Wavelength-Division Multiplexing/Spectral- Amplitude-Coding Optical CDMA System"IEEE Photon. Technol. Lett., vol. 17, No. 6, June. 2005.
 Cheing-Hong lin,Jingshown Wu,Chun-Liang Yang, "noncoherent Spatial/Spectral optical CDMA System with two dimensional Perfect Difference Codes ," Journal of Lightwave Technology, vol. 23, pp. 1209-1212, December 2005.
 Kelley, John L. (1975). General Topology. Springer-Verlag. ISBN 0- 387-90125-6. http://en.wikipedia.org/wiki/Euclidean_space.