Performance analysis of direct-detection optical CDMA systems with optical hard-limiter using equal-weight orthogonal signaling

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This paper analyzes the performance of direct-detection optical CDMA systems with single optical hard-limiter using equal-weight orthogonal (EWO) signaling. Moreover, this paper clarifies the basic structure and the performance of the system using time-shifted versions of optical orthogonal code (OOC's) as EWO signaling. The system assigns the time-shifted versions of OOC's to the transmission of bits "0" and "1," respectively. Thus, the system does not require dynamic estimation of the receiver threshold. The performance is analyzed under the Gaussian approximation of an avalanche photodiode (APD) output where the effects of APD noise, thermal noise and interference are included. From the theoretical analysis and numerical results, it is shown that the system has good performance without dynamic estimation of the receiver threshold.

Original languageEnglish
Pages (from-to)512-520
Number of pages9
JournalIEICE Transactions on Communications
VolumeE82-B
Issue number3
Publication statusPublished - 1999
Externally publishedYes

Fingerprint

Avalanche photodiodes
Limiters
Code division multiple access
Thermal noise

Keywords

  • Canceller
  • CDMA
  • Channel interference
  • Equalweight orthogonal signaling
  • Optical hard-limiter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

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AB - This paper analyzes the performance of direct-detection optical CDMA systems with single optical hard-limiter using equal-weight orthogonal (EWO) signaling. Moreover, this paper clarifies the basic structure and the performance of the system using time-shifted versions of optical orthogonal code (OOC's) as EWO signaling. The system assigns the time-shifted versions of OOC's to the transmission of bits "0" and "1," respectively. Thus, the system does not require dynamic estimation of the receiver threshold. The performance is analyzed under the Gaussian approximation of an avalanche photodiode (APD) output where the effects of APD noise, thermal noise and interference are included. From the theoretical analysis and numerical results, it is shown that the system has good performance without dynamic estimation of the receiver threshold.

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