文章基本信息

标题：ANALYSIS PERFORMANCE OF HYBRID SUBCARRIER MULTIPLEXED OCDMA SYSTEM BASED ON AND SUBTRACTION DETECTION AND SINGLE PHOTODIODE DETECTION
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作者：N.A.A AHMAD ; M.N JUNITA ; S.A. ALJUNID 等
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：2017
卷号：95
期号：15
页码：3623
出版社：Journal of Theoretical and Applied
摘要：This paper demonstrates the comparison of two detections which are; AND subtraction detection and single photodiode detection (SPD). In this work, we evaluate the performance of hybrid subcarrier multiplexing (SCM) of spectral amplitude coding optical code-division multiple-access (SAC-OCDMA) system based on these two detections. SAC-OCDMA is applied due to its capability to reduce the effects of Multiple Access Interference (MAI) by employing code sequences with fixed-in phase cross correlation. This system utilizes the Recursive Combinatorial (RC) code as a one of the SAC-OCDMA codes. A part from that, SCM scheme is efficient to promote the channel data rate of OCDMA system. Hence, the hybrid technique is expected to boost up the spectral efficiency of the OCDMA system by providing large number of simultaneous users with fewer optical channels. The maximum allowable number of concurrent users can be improved by rising the number of subcarrier without effecting the number of code lengths and SAC-OCDMA codes. The result reveals that the implementation of SPD detection gives excellent performance in hybrid SCM SAC-OCDMA system in comparison to AND subtraction detection. This is due to the fact that the effects of MAI and phase induced intensity noise (PIIN) are suppressed at the optical domain.
关键词：Subcarrier Multiplexing; Hybrid SCM OCDMA; AND Subtraction Detection; Single Photodiode Detection (SPD); Recursive Combinatorial (RC) Code