Journal of Computer Science | |
Design and Cost Performance of Decoding Technique for Hybrid Subcarrier Spectral Amplitude Coding-Optical Code Division Multiple Access System | Science Publications | |
M. Mokhtar1  R. K.Z. Sahbudin1  S. Hitam1  M. K. Abdullah1  S. B.A. Anas1  | |
关键词: Cost performance; SDD technique; hybrid subcarrier; Spectral Amplitude Coding- Optical Code Division Multiple Access (SAC-OCDMA); Spectral Direct Decoding (SDD); communication systems; decoding technique; | |
DOI : 10.3844/jcssp.2011.1525.1531 | |
学科分类:计算机科学(综合) | |
来源: Science Publications | |
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【 摘 要 】
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.
【 授权许可】
Unknown
【 预 览 】
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