This article presents a new codethe dynamic cyclic shift codefor spectral amplitude codingoptical code division multiple access systems. One of the important properties of the dynamic cyclic shift code is that the num...
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This article presents a new codethe dynamic cyclic shift codefor spectral amplitude codingoptical code division multiple access systems. One of the important properties of the dynamic cyclic shift code is that the number of users can be increased without increasing the weight value. System performance was evaluated by using both theoretical analysis as well as the simulation experiment. The analysis results show that the proposed dynamic cyclic shift code can support more users in spectral amplitude codingoptical code division multiple access systems compared to spectral amplitude codingoptical code division multiple access codes. It was ascertained by performance evaluation that the dynamic cyclic shift code possesses ideal properties for use in spectral amplitude codingoptical code division multiple access systems.
In this study, the authors proposed a new approach to evaluate the system performance of spectral amplitude coding-optical code division multiple access (SAC-OCDMA) systems. The system performance is evaluated based o...
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In this study, the authors proposed a new approach to evaluate the system performance of spectral amplitude coding-optical code division multiple access (SAC-OCDMA) systems. The system performance is evaluated based on a new code called the dynamiccyclicshift (DCS) code. The bit-error-rate (BER) performance of the DCS code on high-speed SAC-OCDMA systems has been analysed and reported in this study. The most remarkable trait of the newly developed DCS code is that the cross-correlation is variable between 1 and 0, and the phase induced intensity noise is low. In order to evaluate the performance of the DCS code in high-speed SAC-OCDMA system, the mathematical analysis has been extensively derived along with the simulation analysis at 10 Gbit/s, which is carried out by using 'Optisystm (TM) ver.9 simulation software from Optiwave'. The results obtained for the DCS code were compared with those obtained from different coding schemes [e. g. random diagonal code and modified quadratic congruence code] for the same number of interfering users. It has been observed that the DCS code of BER equal to 10(-11) can support high data rate (5 Gbit/s) at 60 km transmission link.
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