Atmospheric Optical Subcarrier Modulation Systems Using Space-Time Block Code

Hiroshi Yamamoto, Tomoaki Ohtsuki

Research output: Contribution to conferencePaperpeer-review

11 Citations (Scopus)


Optical communications through clear atmospheric links can provide high-speed communications where cables cannot be installed easily. However, on atmospheric optical links, the turbulence-induced intensity fluctuations deteriorate the quality of received optical signals. In this paper, we propose two atmospheric optical subcarrier modulation systems using space-time block codes (STBC) with coherent and differential detection to realize high-speed communications on atmospheric optical links. In the proposed systems STBC is used to overcome the influence of the turbulence-induced fading and to get the space diversity gain. We show that the proposed systems can achieve the better bit error rate (BER) than the atmospheric optical subcarrier modulation systems with the single transmit aperture (antenna) in the presence of the scintillation. Moreover, we prove that the differential STBC scheme is 3 dB worse than coherent STBC scheme.

Original languageEnglish
Number of pages5
Publication statusPublished - 2003
Externally publishedYes
EventIEEE Global Telecommunications Conference GLOBECOM'03 - San Francisco, CA, United States
Duration: 2003 Dec 12003 Dec 5


OtherIEEE Global Telecommunications Conference GLOBECOM'03
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change


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