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

Free registration required

Executive Summary

Optical communication through the atmosphere has the potential to provide data transmission over a distance of 1 to 100km at very high rates. The deleterious effects of turbulence can severely limit the utility of such a system, however, causing outages of up to 100ms. In this paper, the authors 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 nearfield 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.

  • Format: PDF
  • Size: 316.79 KB