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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 20, Iss. 8 — Aug. 1, 2002
  • pp: 1284–

Codes for Spectral-Amplitude-Coding Optical CDMA Systems

Zou Wei and H. Ghafouri-Shiraz

Journal of Lightwave Technology, Vol. 20, Issue 8, pp. 1284- (2002)

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Codes with ideal in-phase cross correlation (CC) are required in spectral-amplitude-coding optical code-division multiple-access (CDMA) systems since these codes eliminate multiuser interference and also suppress the effect of phase-induced intensity noise. However, little research work has been done on such codes although codes with ideal CC have been studied for many years. In a paper by Zhou , such a code has been introduced, but no clear construction method has been presented. In this paper,we first review the construction method of this old code and then construct two new codes with ideal in-phase CC in algebraic ways. Both of the proposed new codes are obtained by modifying former codes with ideal CC. It has been shown that the system performance can be improved significantly by using codes with ideal in-phase CC instead of the Hadamard code. These codes can also be used in the synchronous optical CDMA systems for multiuser interference cancellation.


Zou Wei and H. Ghafouri-Shiraz, "Codes for Spectral-Amplitude-Coding Optical CDMA Systems," J. Lightwave Technol. 20, 1284- (2002)

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