Link reliability improvement for optical wireless communication systems with temporal-domain diversity reception

C. H. Kwok, Richard V. Penty, Ian H. White

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We experimentally demonstrate a simple temporal-domain diversity reception (TD-DR) scheme to enhance the reliability of optical wireless transmission links corrupted by atmospheric turbulence (AT) effects. Both nonreturn-to-zero and Manchester encoded on-off-keying modulation schemes are studied in laboratory environments at a 1.25-Gb/s data rate. AT effects are emulated as a slowly varying log-normal intensity variation for the received signal. System bit-error ratio is tracked for the performance evaluation, and results show that the outage probability due to the AT-induced intensity fluctuation for a 1.25-Gb/s link using Manchester coding is reduced from 3.2%±0.1% to <0.1%, when the TD-DR is employed.

Original languageEnglish
Pages (from-to)700-702
Number of pages3
JournalIEEE Photonics Technology Letters
Volume20
Issue number9
DOIs
Publication statusPublished - 1 May 2008

Keywords

  • Atmospheric turbulence (AT)
  • Diversity reception (DR)
  • Free space optics

ASJC Scopus subject areas

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

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