LDPC-coded OAM based FSO transmission system in the presence of strong atmospheric turbulence

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

Abstract

In this invited paper we explore LDPC-coded orbital angular momentum (OAM) based free-space optical (FSO) transmission system in the presence of strong atmospheric turbulence. We find that the BER uncoded curves in the presence of turbulence drop slowly in the regime of high OSNR because of the effect of crosstalk, but when LDPC coding is used, the BER curves drop dramatically with the increase of OSNR. The coding gains is about 3.7, 3.3, and 4.3 dB at BER of 0.04 for OAM states 1, 3, and 5, respectively when single OAM mode is transmitted. In case of OAM multiplexing of states -2, 1, and 4, the curve of OAM state -2 drops along with the increasing OSNR, while error floor can be seen on all the other curves caused by the crosstalk and boundary effect.

Original languageEnglish (US)
Title of host publicationConference Record - Asilomar Conference on Signals, Systems and Computers
PublisherIEEE Computer Society
Pages999-1002
Number of pages4
Volume2016-February
ISBN (Print)9781467385763
DOIs
StatePublished - Feb 26 2016
Event49th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015 - Pacific Grove, United States
Duration: Nov 8 2015Nov 11 2015

Other

Other49th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015
CountryUnited States
CityPacific Grove
Period11/8/1511/11/15

Keywords

  • LDPC
  • OAM multiplexing
  • Orbital angular momentum (OAM)

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing

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  • Cite this

    Qu, Z., & Djordjevic, I. B. (2016). LDPC-coded OAM based FSO transmission system in the presence of strong atmospheric turbulence. In Conference Record - Asilomar Conference on Signals, Systems and Computers (Vol. 2016-February, pp. 999-1002). [7421288] IEEE Computer Society. https://doi.org/10.1109/ACSSC.2015.7421288