AN Xiao-Qiang, QIU Kun, ZHANG Chong-Fu. Analysis of decision threshold for optical correlation receivers in OCDMA system[J]. Journal of Applied Optics, 2006, 27(3): 177-182.
Citation: AN Xiao-Qiang, QIU Kun, ZHANG Chong-Fu. Analysis of decision threshold for optical correlation receivers in OCDMA system[J]. Journal of Applied Optics, 2006, 27(3): 177-182.
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Analysis of decision threshold for optical correlation receivers in OCDMA system

  • 1.

    Key Laboratory of Ministry of Education for Broadband Optical Fiber Transmission and Communication Network,UEST,Chengdu 610054,China;

  • 2.

    Xinan Institute of Technical Physics,Chengdu 610041,China

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  • Corresponding author:

    AN Xiao-Qiang1

  • Received Date: July 02, 2005
  • Revised Date: September 13, 2005
    Graphical Abstract
    • Abstract
  • Addressing codes frequently used in optical codedivision multipleaddress (OCDMA) systems are introduced. They are typically one dimensional timespreading code, twodimensional code and three dimensional code. The means and variances of crosscorrelation for these codes were analyzed. Based on the fundamental principle of optical correlation receivers used in incoherent OCDMA systems, with different addressing codes taken into account, the bit error probability (BEP) of the system was studied. The dependence of optimum decision threshold on the basic parameters of addressing codes and the number of simultaneous users was obtained. Finally, numerical simulations are carried out, and the results show that system BEP performance is optimized when appropriate decision threshold is taken.
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