Doppler shift estimator with MMSE parameter optimization for very low SNR environment in wireless communications

Author

Jingyu Hua ; Zhijiang Xu ; Jin Li ; Limin Meng ; Xiaohu You

Author_Institution

Zhejiang Univ. of Technol., Hangzhou

Volume

44

Issue

3

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

1228

Lastpage

1233

Abstract

A novel iterative Doppler shift estimator is proposed in very low signal-noise-ratio (SNR) environments in single carrier mobile systems. The proposed method exploits the logarithm envelope (LE) of channel estimates, and iteratively finds the minimum mean square error (MMSE) estimation of Doppler shift. Extensive simulations conducted under a wide range of noise corruption clearly show that the proposed estimator substantially outperforms several existing estimators in terms of accuracy.

Keywords

Doppler shift; channel estimation; iterative methods; mean square error methods; mobile radio; spectral analysis; wireless channels; MMSE parameter optimization; channel estimation; iterative Doppler shift estimator; logarithm envelope; minimum mean square error estimation; single carrier mobile systems; wireless communication; AWGN; Additive white noise; Doppler shift; Frequency estimation; Mean square error methods; Mobile communication; Parameter estimation; Programmable control; Signal to noise ratio; Wireless communication;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

Conference_Location

7/1/2008 12:00:00 AM

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2008.4655377

Filename

4655377