Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/46849
標題: Multilevel Prime Codes for Optical CDMA Systems
作者: Hsieh, C.H.
楊谷章
Yang, G.C.
Chang, C.Y.
Kwong, W.C.
關鍵字: Multilevel coding;Optical code division multiple access;Variable;performance;2-d codes;performance;networks;congruences;design
Project: Journal of Optical Communications and Networking
期刊/報告no:: Journal of Optical Communications and Networking, Volume 1, Issue 7, Page(s) 600-607.
摘要: 
In this paper, we study a new class of two-dimensional codes, here called multilevel prime codes, with expanded code cardinality by relaxing the maximum cross-correlation function to any arbitrary positive integer. Besides having asymptotically optimal cardinality and zero autocorrelation sidelobes, these multilevel prime codes can be partitioned into a tree structure of multiple levels of subsets of code matrices. In each level, the number of subsets, the number of code matrices per subset, and the cross-correlation function of each subset are related to the level number. The performance of the new codes in an optical code-division multiple-access system with hard-limiting detection is analyzed. Our results show that the unique partition property of the multilevel prime codes supports a trade-off between code cardinality and performance for meeting different system requirements, such as user capacity and throughput.
URI: http://hdl.handle.net/11455/46849
ISSN: 1943-0620
DOI: 10.1364/jocn.1.000600
Appears in Collections:通訊工程研究所

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