Direct-Detection Optical CDMA Receiver with Interference Estimation and Double Optical Hardlimiters

Kenji Wakafuji, Tomoaki Ohtsuki

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This paper proposes a new channel interference cancellation technique using interference estimation and double optical hardlimiters (DHLs) for direct-detection optical code-division multiple-access systems. In the proposed system, when the output of the DHL is "0," the proposed system outputs "0." When the output of the DHL is "1," the proposed system reconstructs the interference and estimates whether the output "1" is owing to the interference or the transmitted signal. It is shown that the proposed system is effective to reduce the effects of the channel interference. Moreover, it is shown that the proposed system can improve the error floor of the systems with DHL.

Original languageEnglish
Pages (from-to)2182-2188
Number of pages7
JournalJournal of Lightwave Technology
Volume21
Issue number10
DOIs
Publication statusPublished - 2003 Oct 1
Externally publishedYes

Keywords

  • Direct detection
  • Hardlimiter
  • Interference estimation
  • Optical code-division multiple access (CDMA)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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