A novel 2D-OCDMA system with dynamic optimum decision threshold by estimating the number of active users |
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| Authors: | Shengpeng Wan Xingdao He Jizhou Sun |
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| Institution: | Key Laboratory of Nondestructive Test (Ministry of Education), Nanchang Hangkong University, China |
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| Abstract: | A novel two dimensional optical code division multiple access (2D-OCDMA) system with dynamic optimum decision threshold by estimating the number of active users is proposed. The bit-error rates (BER) of the system is analyzed. By using one wavelength as the estimator of the number of active users, which is not assigned to any address code, the number of active users can be obtained. The dynamic optimum decision threshold can be obtained according to the multiple user interference (MUI), which can be obtained by cross-correlation characteristics between address codes and the number of active users. |
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| Keywords: | Optical code division multiple access (OCDMA) Optimum decision threshold Estimator The number of active users |
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