Exploring data compression for a distributed aerial relay application
Name
1018306927-MIT.pdf
Description
Full printable version
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2.97 MB
Format
Adobe PDF
Checksum (MD5)
435f7af68856e51dcccab9fb768ecbbd
Author(s)
Griffin, Joseph C
Advisor(s)
James Ward.
Date Issued
2017
Publisher
Massachusetts Institute of Technology
Abstract
Beamforming systems typically involve arrays of antenna elements with controllable spacing and little or no motion. However, a distributed beamforming system could leave array geometry and motion largely unconstrained. This work considers an airborne relay communication concept with multiple balloons in which the individual array elements act as relays to a receiver on the ground at a base station. The beamforming operation is performed at the receiver. The link between the relays and receiver suffers from a high bandwidth requirement. This thesis explores ways to reduce this bandwidth requirement by compressing the signals across the relays. A distributed compression algorithm is proposed and applied to both simulated and collected data. We conclude that a compression algorithm across the relays offers a substantial decrease in bit rate requirement, and that a preprocessing step can make the compression performance robust against differential delay and Doppler shifts across the array.
Description
Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (page 85).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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