Bit-error rate for free-space adaptive optics laser communications
- 1 April 2002
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America A
- Vol. 19 (4) , 753-758
- https://doi.org/10.1364/josaa.19.000753
Abstract
An analysis of adaptive optics compensation for atmospheric-turbulence-induced scintillation is presented with the figure of merit being the laser communications bit-error rate. The formulation covers weak, moderate, and strong turbulence; on-off keying; and amplitude-shift keying, over horizontal propagation paths or on a ground-to-space uplink or downlink. The theory shows that under some circumstances the bit-error rate can be improved by a few orders of magnitude with the addition of adaptive optics to compensate for the scintillation. Low-order compensation (less than 40 Zernike modes) appears to be feasible as well as beneficial for reducing the bit-error rate and increasing the throughput of the communication link.Keywords
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