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dc.contributorGuu-Chang Yangen_US
dc.contributor.authorSu, Je-Weien_US
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dc.description.abstractIn our recently proposed diversity O-CDMA scheme, every simultaneous user transmitted multiple copies of an optical code per data bit of one in order to achieve good code performance. To maintain performance, our analysis showed that copy independency wasessential, which was achieved by time-shifting these copies to different chip (or time-slot) positions per bit duration. However, complete copy independency is hard to achieve under the conventional chip-synchronous assumption, especially in short code length. In this paper, we combine the realistic effects of chip asynchronism and copy dependency in the analysis of such diversity O-CDMA systems and formulate a new, generalized, and more accurate performance model. Finally, the improvement in copy independency and code performance due to the introduction of finer granularity in time-shfits among the diversity copies are studied.en_US
dc.description.tableofcontents致謝 II 摘要 III Abstract IV Contents V List of Figures VI List of Tables VIII Chapter 1 Introduction 1 Chapter 2 Diversity O-CDMA System Models 4 Chapter 3 General Analyses of the Diversity Scheme 10 3.1 Chip-Synchronous Assumption 10 3.2. Chip-Asynchronous Assumption 17 Chapter 4 Improved Copy-Independency in Diversity O-CDMA 21 Chapter 5 Conclusions 24 References 25zh_TW
dc.subjectcopy asynchronousen_US
dc.subjectchip asynchronousen_US
dc.subjecton-off keyingen_US
dc.subjectoptical code-division multiple accessen_US
dc.titleDesign and Analysis of Generalized Diversity Optical CDMA Systemsen_US
dc.typeThesis and Dissertationzh_TW
item.openairetypeThesis and Dissertation-
item.fulltextwith fulltext-
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