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A new family of 2-D optical orthogonal codes and analysis of its performance in optical CDMA access networks

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4 Author(s)
Sun Shurong ; Sch. of Electron. & Comput. Sci., Peking Univ., Beijing, China ; Hongxi Yin ; Ziyu Wang ; Anshi Xu

A new family of two-dimensional optical orthogonal code (2-D OOC), one-coincidence frequency hop code (OCFHC)/OOC, which employs OCFHC and OOC as wavelength hopping and time-spreading patterns, respectively, is proposed in this paper. In contrary to previously constructed 2-D OOCs, OCFHC/OOC provides more choices on the number of available wavelengths and its cardinality achieves the upper bound in theory without sacrificing good auto-and-cross correlation properties, i.e., the correlation properties of the code is still ideal. Meanwhile, we utilize a new method, called effective normalized throughput, to compare the performance of diverse codes applicable to optical code division multiple access (OCDMA) systems besides conventional measure bit error rate, and the results indicate that our code performs better than obtained OCDMA codes and is truly applicable to OCDMA networks as multiaccess codes and will greatly facilitate the implementation of OCDMA access networks.

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Lightwave Technology, Journal of  (Volume:24 ,  Issue: 4 )