Multiple-wavelength optical orthogonal codes under prime-sequence permutations for optical CDMA

Wing C. Kwong, Guu Chang Yang, Varghese Baby, Camille Sophie Brès, Paul R. Prucnal

Research output: Contribution to journalArticle

82 Scopus citations

Abstract

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 the 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.

Original languageEnglish (US)
Pages (from-to)117-123
Number of pages7
JournalIEEE Transactions on Communications
Volume53
Issue number1
DOIs
StatePublished - Jan 1 2005

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Keywords

  • Hard-limiting
  • Optical code-division multiple access (O-CDMA)
  • Optical orthogonal codes (OOCs)
  • Wavelength-hopping time-spreading

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