Self-Synchronized DS/SS With High Spread Factors for Robust Millimeter-Wave Datalinks

9 July 2021

journal article
research article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuits and Systems I: Regular Papers

Vol. 68 (9), 3941-3950
https://doi.org/10.1109/tcsi.2021.3092766

Abstract

This paper presents direct sequence spread spectrum (DS/SS) datalinks operating at 92-100 GHz with spreading factors up to 100K. Unlike traditional DS/SS datalinks which rely on preamble and cyclic dispreading for synchronization, the reported datalink uses a self-synchronous demodulation scheme, avoiding the large hardware complexity associated with exceptionally large spreading factors, and avoiding the difficulties of synchronizing the long de-spreading codes that are applicable to mm-wave systems. A demonstration link chipset is presented operating at 92-100 GHz with a spreading factor of 104K and a spread bandwidth of 6.0 GHz (baseband bandwidth of 56Kb/s) while consuming a total of 425mW.

Keywords

Funding Information

Jet Propulsion Laboratory, California Institute of Technology, through the National Aeronautics and Space Administration (80NM0018D0004)

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