期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2015
卷号：81
期号：3
出版社：Journal of Theoretical and Applied
摘要：In this paper, we propose a three dimensional (3-D) codes namely 3-D perfect difference/ multi diagonal (3-D PD/MD) code for spectral/time/spatial optical code division multiple access (OCDMA) system based on the perfect difference and multi diagonal codes. The multi-access interference (MAI) is fully eliminated in the receiver based on this code. The system performance is analyzed mathematically based on the proposed code under the consideration of the receiver noises, and compared with the systems of , 2-D perfect difference (2-D PD), 2-D diluted perfect difference (2-D DPD) and 3-D perfect difference (3-D PD) code. The proposed code reduces the receiver noises by reducing the receiver complexity to 50% of the 3-D PD code. In addition to that, the mathematical results shows that the 3-D PD/MD code system can accommodate more active users at a bit error rate (BER) of (10-9) and data rates of 0.622Gbps and 1.25Gbps. Hence, the proposed system can be more applicable than the former 3-D PD code.
