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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 5, Iss. 5 — May. 1, 2013
  • pp: 411–420

MIMO Architecture for Coherent Optical Wireless Communication: System Design and Performance

Mingbo Niu, Julian Cheng, and Jonathan F. Holzman  »View Author Affiliations

Journal of Optical Communications and Networking, Vol. 5, Issue 5, pp. 411-420 (2013)

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A coherent multiple-input multiple-output architecture is proposed for optical wireless communications (OWCs) to mitigate atmospheric turbulence effects. Transmitter optical signals operate at distinct carrier frequencies to allow the received optical signals to be separately processed. The accumulated phase noise in each transmission branch can then be independently and electrically compensated. Based on the proposed architecture, several diversity combining techniques are used at the receiver end for system performance evaluation. Three different turbulence models are considered in this paper for different scintillation level ranges, including gamma–gamma turbulence, K-distributed turbulence, and negative exponential turbulence. Closed-form error rate expressions are derived using a series expansion approach. The diversity order in the gamma–gamma turbulence channel is found to depend only on the smaller channel parameter, while the K-distributed and negative exponential turbulence channels are found to have the same diversity order. The presented numerical results demonstrate substantial system performance improvement over single-link coherent OWC.

© 2013 Optical Society of America

OCIS Codes
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Research Papers

Original Manuscript: October 3, 2012
Revised Manuscript: January 24, 2013
Manuscript Accepted: February 14, 2013
Published: April 5, 2013

Mingbo Niu, Julian Cheng, and Jonathan F. Holzman, "MIMO Architecture for Coherent Optical Wireless Communication: System Design and Performance," J. Opt. Commun. Netw. 5, 411-420 (2013)

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