@article {10.3844/jcssp.2011.1525.1531, article_type = {journal}, title = {Design and Cost Performance of Decoding Technique for Hybrid Subcarrier Spectral Amplitude Coding-Optical Code Division Multiple Access System}, author = {Sahbudin, R.K.Z. and Abdullah, M.K. and Mokhtar, M. and Hitam, S. and Anas, S.B. Ahmad}, volume = {7}, number = {10}, year = {2011}, month = {Aug}, pages = {1525-1531}, doi = {10.3844/jcssp.2011.1525.1531}, url = {https://thescipub.com/abstract/jcssp.2011.1525.1531}, abstract = {Problem statement: A hybrid technique combining subcarrier multiplexed and Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) deploying the Khazani-Syed code was proposed. It was proposed as a mean of increasing the maximum number of simultaneous active users by increasing the subcarrier and/or the SAC-OCDMA code word. Multiple Access Interference (MAI) is the most dominant cause of performance degradation in SACOCDMA systems. Approach: A decoding technique which was simple and easy to build named Spectral Direct Decoding (SDD) technique was proposed for the hybrid system of subcarrier SACOCDMA. Results: The comparison between the complementary subtraction and proposed SDD techniques for hybrid subcarrier SAC-OCDMA system in terms of cost performance was presented here. Results showed that the cost performance of the SDD technique offers a significant improvement over the complementary subtraction detection technique. Conclusion: It is shown that the cost performance of the hybrid system using SDD technique is significantly better than using the Complementary subtraction technique.}, journal = {Journal of Computer Science}, publisher = {Science Publications} }