Analytical Comparison of Various Detection Techniques for SAC-based OCDMA Systems: A Comparative Review

Spectral amplitude coding-optical code division multiple access (SAC OCDMA) is the most popular technique due to its suitability in asynchronous environment with efficient codes and detection techniques. In this paper, we have presented a comparative analysis of various detection techniques utilized for SAC-based OCDMA to improve the system performance and minimize the noises. Each detection technique has a different architecture for detection of information and based on that, amount of multiple access interference (MAI) is eliminated. Further, its selection criteria relies upon multiple factors such as type of optical code and particular application area. In some of the optical codes, very less overlaps in spectra of various clients are present due to its ideal cross-correlation properties among each user; therefore, in this case used detection technique carries fewer optical and electrical components. This reduces MAI to a considerable extent. Furthermore, proposed idea of analyzing various detection technique suggested use of particular detection techniques based on specific application and system parameters.