This work 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 1994 IEEE Global Telecommunications Conference (1994, San Francisco, CA), pp. 1289-1292, Institute of Electrical and Electronics Engineers (IEEE), Nov 1994.
The definitive version is available at https://doi.org/10.1109/GLOCOM.1994.512989
1994 IEEE Global Telecommunications Conference, GLOBECOM '94 (1994: Nov. 28-Dec. 2, San Francisco, CA)
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
International Standard Book Number (ISBN)
Article - Conference proceedings
© 1994 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.