An average Cramer-Rao bound for frequency offset estimation in frequency-selective fading channels

Authors:
Yinghui Li;Hlaing Minn;Jianqiang Zeng
Affiliations:
LitePoint Corp.;of Electrical Engineering, University of Texas at Dallas;Erik Jonsson School Research, University of Texas at Dallas
Venue:
IEEE Transactions on Wireless Communications
Year:
2010

Citing 2
Cited 0

Training Design for Multipath Channel and Frequency-Offset Estimation in MIMO Systems

IEEE Transactions on Signal Processing
Frequency estimation in the presence of Doppler spread: performanceanalysis

IEEE Transactions on Signal Processing

Quantified Score

Hi-index	0.01

Visualization

Abstract

Several variations of Cramer-Rao bounds for carrier frequency offset (CFO) estimation in frequency-selective fading channels have been used to benchmark practical estimators' performance or to design training signals for CFO estimation. Among them, the extended Miller-Chang bound (EMCB) provides a tighter bound than the CRB for locally unbiased estimators. However, there is no closed-form expression of the EMCB for the CFO estimation in frequency-selective fading channels with an arbitrary training signal. In this letter, we derive a closed-form exact average CRB (the EMCB) valid for any training signal and any signal structure for the CFO estimation over frequency-selective Rayleigh fading channels with uncorrelated or arbitrarily correlated taps. The accuracy and generality of the proposed average CRB expression, and its advantages over the existing expressions are corroborated by numerical and simulation results.