Optical CDMA via temporal codes

We provide an analysis to the performance of Optical Orthogonal Codes(OOC) in an Optical Code Division Multiple Access(CDMA) network by considering the probability distribution of the interference patterns. We show that the actual performance is close to a previous estimate. We also consider a less structured temporal code in which the code words are allowed to overlap at two pulse positions. We obtain the bit error probability for this class of codes for two cases: with and without optical hard-limiting at the receivers. We show that this code may increase the number of users in the network considerably without a significant loss in the performance. We also provide a simple partial construction scheme for this code.