Investigates a first-order correlation loop for tracking pseudo-noise (PN) codes. The local reference is produced by a PN sequence generator in series with a Hilbert transform filter. The tracking performance of this non-linear loop is compared with conventional early-late delay-lock loops (ELDLL). Using a conservative definition of bandwidth, the new loop was found to be superior at moderate to low signal-to-noise ratios (SNR). Another advantage of the new structure is that it has a very large (arguably infinite) lock range.
K. L. Kosbar and H. U. Gunawardana, "Correlative Tracking of Pseudo-Noise Codes using a Phase Shifted Reference," Proceedings of the IEEE Global Telecommunications Conference, 1994, GLOBECOM '94, Institute of Electrical and Electronics Engineers (IEEE), Jan 1994.
The definitive version is available at http://dx.doi.org/10.1109/GLOCOM.1994.512989
IEEE Global Telecommunications Conference, 1994, GLOBECOM '94
Electrical and Computer Engineering
Keywords and Phrases
Hilbert Transform Filter; Hilbert Transforms; PN Sequence Generator; Bandwidth; Correlation Methods; Correlative Tracking; Digital Filters; First-Order Correlation Loop; Lock Range; Nonlinear Filters; Nonlinear Loop; Phase Shifted Reference; Pseudonoise Codes; Signal-To-Noise Ratios; Synchronisation; Tracking Filters; Tracking Performance
Article - Conference proceedings
© 1994 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.