Performance Analysis and Optimization of Non-Data-Aided Carrier Frequency Estimator for APSK Signals

Nan WU  Hua WANG  Jingming KUANG  Chaoxing YAN  

Publication
IEICE TRANSACTIONS on Communications   Vol.E95-B   No.6   pp.2080-2086
Publication Date: 2012/06/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
carrier frequency estimation,  non-data-aided,  amplitude and phase shift keying,  Cramer-Rao bound,  jitter variance,  optimization,  

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Summary: 
This paper investigates the non-data-aided (NDA) carrier frequency estimation of amplitude and phase shift keying (APSK) signals. The true Cramer-Rao bound (CRB) for NDA frequency estimation of APSK signals are derived and evaluated numerically. Characteristic and jitter variance of NDA Luise and Reggiannini (L&R) frequency estimator are analyzed. Verified by Monte Carlo simulations, the analytical results are shown to be accurate for medium-to-high signal-to-noise ratio (SNR) values. Using the proposed closed-form expression, parameters of the algorithm are optimized efficiently to minimize the jitter variance.