Successive interference cancellation receiver (SIC) in DS-OCDMA system

The CDMA (Code Division Multiple Access) is to spread or distribute the signal over a very large bandwidth up to the “invisible” to other users sharing the same band. The study presented in this work is an exploratory study on the application of direct sequence CDMA in optical transmission systems (OCDMA Optical Code Division Multiple Access or Multiple Access Code Division in Optics), where data to be transmitted is spread time, in our study we used sequences called quasi-orthogonal unipolar OOC, we considered the multiple access interference (MAI) due to multiple access technique is the only performance limitation. The multi-user detection, and in particular the structure SIC (Successive Interference Cancellation Receiver) has been studied in this work, the calculation of the probability of error shows an improvement over the conventional receiver (CR), for validate the theoretical studies, simulations are performed in MATLAB and presented in this work.