Gaussian Approximation of the BER for Non-Coherent Optical Fiber CDMA Networks Using Sparse Codes
نویسنده
چکیده
An analysis based on a Gaussian approximation of the BER performance for noncoherent optical fiber code-division multiple-access (CDMA) networks (both asynchronous and synchronous) is presented. The effects of shot noise, thermal noise, interference and the architecture of optical receivers are included in the evaluation of the BER. A general equation for the BER is established and it is shown that using this equation, the results for special cases previously published by others were confirmed. BER performance for asynchronous optical CDMA systems using prime sequence codes and that of synchronous systems using modified prime codes were calculated. The author shows that the synchronous system can achieve better performance.
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تاریخ انتشار 2002