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Proceedings Paper

Reciprocity-enhanced transmitter diversity for lasercom
Author(s): Jeffrey M. Roth; Alexander A. Knoedler; Ronald R. Parenti; Shankararaman Ramakrishnan; Jeffrey R. Minch; John D. Moores
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Paper Abstract

For some free-space laser communications (lasercom) links impacted by atmospheric-induced scintillation, the principle of reciprocity provides knowledge of a remote terminal's received intensity fluctuations based on measurements of the local terminal's received intensity fluctuations. We evaluate a reciprocity-enhanced technique using optical switching between multiple spatially-diverse transmit apertures to mitigate against atmospheric-induced scintillation. Experimental bit-error rate measurements are presented to quantify the expected performance of this approach in comparison to standard static diversity approaches. We investigate system constraints of this reciprocity-enhanced transmitter diversity approach, and identify candidate optical switches and digital logic for implementation.

Paper Details

Date Published: 4 June 2020
PDF: 17 pages
Proc. SPIE 11272, Free-Space Laser Communications XXXII, 1127209 (4 June 2020); doi: 10.1117/12.2548463
Show Author Affiliations
Jeffrey M. Roth, MIT Lincoln Lab. (United States)
Alexander A. Knoedler, MIT Lincoln Lab. (United States)
Ronald R. Parenti, MIT Lincoln Lab. (United States)
Shankararaman Ramakrishnan, MIT Lincoln Lab. (United States)
Jeffrey R. Minch, MIT Lincoln Lab. (United States)
John D. Moores, MIT Lincoln Lab. (United States)

Published in SPIE Proceedings Vol. 11272:
Free-Space Laser Communications XXXII
Hamid Hemmati; Don M. Boroson, Editor(s)

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