2026-09-18T22:32:58Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/774402022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
James K. Roberge and Robert J. Murphy.
Lund, Gavin
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2013-03-01T15:05:05Z
2013-03-01T15:05:05Z
2012
2012
http://hdl.handle.net/1721.1/77440
826502762
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 67).
In this thesis, I developed a phase-locked loop system for data clock recovery in a free-space laser communication application. The clock recovery unit is designed to operate at extremely low optical received power, tolerate a fading channel, and also account for Doppler effects. I explored the feasibility of adding a noise-gating system to the clock recovery unit in order to improve link margin in low-data-rate scenarios. I measured key system performance metrics, such as bandwidth, rejection, lock range and phase noise, and tested system integration with the existing optical communications testbed.
by Gavin Lund.
M.Eng.
67 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
A noise-gated PLL for clock recovery in a free-space laser communication system
Noise-gated phase-locked loop for clock recovery in a free-space laser communication system
Thesis
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