J. Chovan and F. Uherek (Slovak Republic)
Optical CDMA, modeling, optical hard-limiter, multipleaccesses, all-optical signal processing
We present the proposed modification of decoder for 2-D Wavelength/Time (W/T) Optical Code Division Multiple Access (O-CDMA) system by optical hard-limiters. The performance improvement of the system using proposed decoder modification is shown by numerical simulation of the decoder output signal, average signal to interference difference and bit error probability as a function of active user number and weight of codeword for the different topology of the decoder. The influence of non-ideal properties of the used optical hard-limiters upon average signal to interference difference and bit error probability in system is studied.
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