Optical CDMA network codecs with merged-M-coded wavelength-hopping and prime-coded time-spreading

Song Ming Lin, Jen-Fa Huan, Chao Chin Yang

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


This paper proposes a new hybrid code for optical CDMA systems based on modified maximal-length sequence (M-sequence) codes for wavelength-hopping and prime codes for time spreading. Using the proposed hybrid code, two optical encoder/decoders are constructed using either fiber-Bragg gratings (FBGs) and optical delay lines, or arrayed-waveguide gratings (AWGs) and optical delay lines, respectively. The system performance is compared with that provided by the well-known prime-hop sequence code. The results show that the merged-M-sequence codes not only provide a higher capacity, but can also be realized via a simpler configuration. Furthermore, the proposed code is less expensive than prime-hop code under virtually identical BER conditions.

Original languageEnglish
Pages (from-to)117-128
Number of pages12
JournalOptical Fiber Technology
Issue number2
Publication statusPublished - 2007 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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