Lock detection in Costas loops

Author

Mileant, A. ; Hinedi, S.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

40

Issue

3

fYear

1992

fDate

3/1/1992 12:00:00 AM

Firstpage

480

Lastpage

483

Abstract

Previous analyses of lock detector algorithms for Costas loops have ignored the effects of the inherent correlation between samples of the phase error process. In this work, analysis and simulations are used to quantify the effects of phase correlation on lock detection for the `square law´ and `absolute value´ type detectors. Results which depict the lock detection probability as a function of loop signal-to-noise ratio for a given false alarm rate are obtained. It is shown that the square law detector experiences less degradation due to phase jitter than the absolute value detector and that the degradation in detector signal-to-noise ratio is more pronounced for squarewave than for sinewave signals

Keywords

phase-locked loops; signal detection; Costas loops; absolute value detector; false alarm rate; lock detection probability; lock detector algorithms; phase correlation; phase jitter; signal-to-noise ratio; simulations; sinewave signals; square law detector; squarewave signals; Algorithm design and analysis; Analytical models; Bandwidth; Degradation; Detectors; Gaussian noise; Jitter; Phase detection; Phase estimation; Signal to noise ratio;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.135716

Filename

135716