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Coherent Optical Communication over the Turbulent Atmosphere with Spatial Diversity and Wavefront Predistortion

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2 Author(s)
Puryear, A. ; E. Shannon Commun. & Network Group, Massachusetts Inst. of Technol., Cambridge, MA, USA ; Chan, V.W.S.

Optical communication through the atmosphere has the potential to provide data transmission over a distance of 1 to 100 km at very high rates. The deleterious effects of turbulence can severely limit the utility of such a system, however, causing outages of up to 100 ms. In this paper, we investigate the use of spatial diversity with wavefront predistortion and coherent detection to overcome these turbulence-induced outages. This system can be realized, especially if the turbulence or the receiver is in the nearfleld of the transmitter. New results include closed-form expressions for average bit error rate, outage probability, and power efficiency. Additionally, system performance gains in the presence of a worst-case interferer are presented. These significant results are used to develop design intuition for future system implementation.

Published in:

Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE

Date of Conference:

Nov. 30 2009-Dec. 4 2009