Abstract
Abstract Performance analysis of an incoherent time spread on–off keying optical Code Division Multiple Access (O-CDMA) system with non-ideal optical hard-limiters is reported in this paper. For the first time we made an approximation of the properties of an implemented passive optical hard-limiter. It was named as a non-ideal optical hard-limiter and its non-ideal parameter was defined. Shortened optical orthogonal codes generated by an extended set technique achieved multiple accesses in the investigated O-CDMA system. Performance improvement of O-CDMA system for the cases of O-CDMA receiver without any, with one and with two optical hard-limiters is shown by simulation of the signal-to-interference ratio and the bit error probability. The influence of non-ideal properties of the optical hard-limiter upon the performance of O-CDMA system is studied.
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