An adaptive modulation scheme for coded free-space optical systems

Sayed Hasan Hariq, Niyazi Odabasioglu, Murat Uysal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

For very slowly-varying fading channels as in the case of atmospheric turbulence-induced fading, it is possible to reliably estimate the channel state information and send it back to the transmitter. The transmitter can use this information to vary the transmission parameters such as power, modulation size, code rate etc according to the channel conditions. This is known as link adaptation. In this paper, we consider a turbo-coded free-space optical (FSO) system with M-Ary pulse position modulation over log-normal turbulence channels and propose an adaptive modulation scheme under peak power constraints. Our simulation results demonstrate significant performance improvements of the proposed adaptive scheme over non-Adaptive counterparts.

Original languageEnglish (US)
Title of host publication2014 19th European Conference on Networks and Optical Communications, NOC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages132-135
Number of pages4
ISBN (Electronic)9781479938728
DOIs
StatePublished - Dec 23 2014
Event2014 19th European Conference on Networks and Optical Communications, NOC 2014 - Milano, Italy
Duration: Jun 4 2014Jun 6 2014

Publication series

Name2014 19th European Conference on Networks and Optical Communications, NOC 2014

Conference

Conference2014 19th European Conference on Networks and Optical Communications, NOC 2014
Country/TerritoryItaly
CityMilano
Period6/4/146/6/14

Keywords

  • Free-space optical communications
  • adaptive transmission
  • lognormal fading channel
  • turbo codes

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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