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Performance analysis of 2-D time-wavelength optical CDMA systems with coherent light sources: Code design considerations

Bazan, T.M.A. and Harle, D.A. and Andonovic, I. (2006) Performance analysis of 2-D time-wavelength optical CDMA systems with coherent light sources: Code design considerations. Journal of Lightwave Technology, 24 (10). pp. 3583-3589. ISSN 0733-8724

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Abstract

The performance of two-dimensional (2-D) time-wavelength (TW) optical code-division multiple access systems at both physical and data link layers is considered in the presence of a multitude of noise sources. Particular consideration is given however to both beat noise (BN) and multiple-access-interference effects. A general procedure for calculating BN is presented. Comparisons between several 2-D TW codes comprising single-pulse-per-column/row and multiple-pulse-per-column/row strategies are performed. Results reveal that BN is strongly dependent on the code properties and the distribution of wavelengths within a code. Several aspects for 2-D TW code design are presented that mitigate the effect of BN.