Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/46831
標題: Multiple-wavelength optical orthogonal codes under prime-sequence permutations for optical CDMA
作者: Kwong, W.C.
楊谷章
Yang, G.C.
Baby, V.
Bres, C.S.
Prucnal, P.R.
關鍵字: hard-limiting
optical code-division multiple
access (O-CDMA)
optical
orthogonal codes (OOCs)
wavelength-hopping time-spreading
increased security
system
fiber
performance
access
design
期刊/報告no:: Ieee Transactions on Communications, Volume 53, Issue 1, Page(s) 117-123.
摘要: In this paper, a new family of two-dimensional (2-D) wavelength-hopping time-spreading codes, which employs wavelength hopping algebraically under prime-sequence permutations on top of time-spreading optical orthogonal codes, is studied and analyzed. Different from other 2-D codes, our new codes allow the number of wavelengths and code length to be chosen independently and, at the same time, the code cardinality is a quadratic function of the number of wavelengths without sacrificing the maximum cross-correlation value (i.e., still at most one). They are particularly suitable for high bit-rate optical code-division multiple-access systems with broadband mode-locked lasers, in which the number of time slots is very limited, and system capacity can only be grown by increasing I he number of wavelengths, rather than code length. Finally, a novel wavelength-aware detector for wavelength -hopping time-spreading codes is discussed and shown to provide improved code performance.
URI: http://hdl.handle.net/11455/46831
ISSN: 0090-6778
文章連結: http://dx.doi.org/10.1109/tcomm.2004.840661
Appears in Collections:通訊工程研究所

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