This paper introduces a new method to construct zero cross correlation (ZCC) code for spectral amplitude coding-optical code division multiple access (SAC-OCDMA) systems. Its construction is based on an identity matri...
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ISBN:
(纸本)9781728131573
This paper introduces a new method to construct zero cross correlation (ZCC) code for spectral amplitude coding-optical code division multiple access (SAC-OCDMA) systems. Its construction is based on an identity matrix which characterized by: flexibility in code weight and simple construction steps. According to numerical results, SAC- OCDMA system has better performance using our proposed ZCC code comparing with dynamic cyclic shift (dcs) and random diagonal (RD) codes in term of BER thanks to zero cross correlation property. Where, it can enhance the system capacity up to 3.26 and 1.76 times, and data rate is also enhanced about 5.75 and 3.02 times comparing with dcs and RD codes respectively.
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 dynamic cyclic shift (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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