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：2014
卷号：67
期号：2
出版社：Journal of Theoretical and Applied
摘要：In this paper, a comparative study to evaluate the performance of spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA) systems based on single photo-diode (SPD) detection and spectral direct detection (SDD) schemes. In our work, we utilized Modified Double weight (MDW) code as one of the SAC codes for evaluated both detection techniques. The results characterizing the bit-error-rate (BER) of 10-12 with respect to the data rate show that the SDP offers a significant improved performance for long haul applications over SDD technique. Furthermore, the SPD detection has higher signal �to-noise ratio (SNR) than SDD technique utilizing different types of optical filters. Finally, for the same quality of service (QoS) for a bit error rate (BER) of 10-12 and data rate of 622 Mbps, SPD allows higher transmission distance of 30 km than SDD technique.
