RoFSO channel modeling considering time-correlation of scintillation and its application to performance evaluation of WLAN signal transmission

Kyung Hwan Kim, Hideaki Onodera, Takeshi Higashino, Takuya Nakamura, Yuji Aburakawa, Katsutoshi Tsukamoto, Shozo Komaki, Kazuhiko Wakamori, Toshiji Suzuki, Kamugisha Kazaura, Mohamad Shah Alam, Koichi Takahashi, Kazunori Ohmae, Takurou Satou, Mitsuji Matsumoto

Research output: Contribution to journalConference articlepeer-review

Abstract

This paper firstly derives a new model of RoFSO (Radio on Free Space Optics) channel considering fluctuation speed of the scintillation and the probability density function (p.d.f) of the random and time-correlated optical intensity disturbed by scintillation. The relationships among frequency characteristic of RoFSO channel, variance of received optical intensity and atmospheric conditions (temperature and insolation) are statistically analyzed by the proposed model. By using the proposed model and the relationships, the throughput performance of WLAN (802.11a) over RoFSO link is evaluated with computer simulations. For two cases of without-shadowing and with-shadowing in the radio propagation channel, evaluations of degradation due to scintillation are conducted. As a result, it is found that the degradation due to scintillation is much smaller than that due to shadowing in the throughput performance for WLAN.

Original languageEnglish
Article number72340L
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7234
DOIs
Publication statusPublished - 2009 Mar 23
EventBroadband Access Communication Technologies III - San Jose, CA, United States
Duration: 2009 Jan 282009 Jan 29

Keywords

  • Butterworth filter
  • Degradation
  • Fluctuation speed
  • Gamma distribution
  • RoFSO (radio on free space optics) system
  • Scintillation
  • Throughput performance
  • Time-correlation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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