Robust Phase Estimation of a Hybrid Monte Carlo/Finite Memory Digital Phase-Locked Loop

Sang-Su LEE  Sung-Hyun YOU  Seok-Kyoon KIM  

IEICE TRANSACTIONS on Information and Systems   Vol.E102-D   No.5   pp.1089-1092
Publication Date: 2019/05/01
Publicized: 2019/02/22
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2018EDL8144
Type of Manuscript: LETTER
Category: Data Engineering, Web Information Systems
digital phase-locked loop,  Monte Carlo estimation,  finite memory estimation,  hybrid estimation,  

Full Text: PDF>>
Buy this Article

Digital phase-locked loops (DPLLs) have been designed in a number of ways to correctly generate pulse signals in various systems. However, the existing DPLLs have poor acquisition performance or are prone to the divergence phenomenon when modeling and/or round-off errors exist and the noise statistics are incorrect. In this paper, we propose a novel DPLL whose phase estimator is designed in hybrid form that utilizes the advantages of Monte Carlo estimation, which is robust to nonlinear effects such as measurement quantization, and a finite memory estimator, which is robust against incorrect noise information and system model mismatch. The robustness of the proposed hybrid Monte Carlo/finite memory DPLL is demonstrated by comparing its phase estimation performance via a numerical example.