Design implementation and performance comparison of ZCC code and MDW code for 10Gbps Optical CDMA system

摘要

OCDMA is an efficient method of optical communication in which Optical codes is used at transmitter end in order to encode the data and correspondingly it is decoded at receiver's end. Every user has a specific code through which it encodes the data and thus minimizes the error rate in the system. Here a comparison between the codes ZCC and DW is done. As these codes have a correlation value of either zero or close to the ideal value. In this research, we have designed a system to incorporate both these codes separately and analyse the performance on the basis of BER and Q-factor taking a 50km of fibre and sending the data at 10Gbps. Further, the results are analysed using eye diagram and signal diagram for both the above mentioned codes and it was observed that DW code support only 16 users whereas ZCC code supports 18 users with minimum BER as . The codes where constructed using MATLAB and implemented in Optisystem 7.0.