Tracking Biases Caused By Imperfections in DLL Receivers

Gerhard Hejc and Wolfgang Schaefer

Abstract:	Delay Lock Loop (DLL) is a feedback system that is able to track the code phase of a pseudo-noise (PN) signal. Imperfections in the DLL or the RF front end may or may not lead to tracking biases, which have to be removed by a receiver-specific calibration factor. The goal of this work is to show that also imperfections (spectral asymmetry of the signal, carrier-phase imbalance of the DLL), which do not change the code phase, can result in significant biases when both effects are combined.
Published in:	Proceedings of the 41st Annual Precise Time and Time Interval Systems and Applications Meeting November 16 - 19, 2009 Hyatt Regency Tamaya Resort Santa Ana Pueblo, New Mexico
Pages:	551 - 558
Cite this article:	Hejc, Gerhard, Schaefer, Wolfgang, "Tracking Biases Caused By Imperfections in DLL Receivers," Proceedings of the 41st Annual Precise Time and Time Interval Systems and Applications Meeting, Santa Ana Pueblo, New Mexico, November 2009, pp. 551-558.
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