Reciprocity-enhanced time-division multiplexed optical switching with spatial diversity for free-space optical communication links

This thesis investigates a performance analysis and experimental measurements of a free-space optical communications system that exploits optical reciprocity to switch between multiple (N) spatially-diverse apertures to increase data transmission through a scintillating channel. Electromagnetic signals, specifically optical, propagating along either direction of the same path experience the same changes in signal strength (reciprocity). A duplex link on a fading channel can use knowledge of the channel condition to decide to switch between multiple spatially diverse apertures, functionally improving the quality of the link. This concept will be referred to as "time division multiplexed (TDM) reciprocity." Higher throughput, higher received power, and lower latency can be achieved by exploiting reciprocity to choose a higher quality channel. The experimental work in this thesis includes systems measurements and assessment of components and sub-systems that enable TDM reciprocity.

Name thesis:degree_name

Master

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Aeronautics and Astronautics

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2019

Author dc:creator

• Knoedler, Alexander A.(Alexander Andrew)

Advisor dc:contributor.advisor

• Kerri Cahoy, John D. Moores and Jeffrey M. Roth.

• Aeronautics and Astronautics.

Statement dc:rights

• MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1721.1/122706

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/122706