TY  - JOUR
AU  - Sahbudin, R.K.Z. 
AU  - Abdullah, M.K. 
AU  - Mokhtar, M. 
AU  - Hitam, S. 
AU  - Anas, S.B. Ahmad 
PY  - 2011
TI  - Design and Cost Performance of Decoding Technique for Hybrid Subcarrier Spectral Amplitude Coding-Optical Code Division Multiple Access System
JF  - Journal of Computer Science
VL  - 7
IS  - 10
DO  - 10.3844/jcssp.2011.1525.1531
UR  - https://thescipub.com/abstract/jcssp.2011.1525.1531
AB  - 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.