SNR-independent maximum Doppler frequency estimators with bandwidth adjustment technique

Author

Yu, Hyunkya ; Park, Goohyun ; Cho, Myeon-gyun ; Hong, Dasik

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul

Volume

4

fYear

2005

fDate

11-14 Sept. 2005

Firstpage

2562

Abstract

Information of the maximum Doppler frequency enable to optimize many channel-adaptive techniques and radio resource management methods for mobile radio communication systems. In this paper, we propose four maximum Doppler frequency estimators which are based on the level crossing rate (LCR), the zero crossing rate (ZCR), the covariance function (COV) and the autocorrelation function (ACF). To eliminate the influence of additive noise, we analyze the conditions for the estimators independent of the signal-to-noise ratio (SNR) and implement the conditions with a downsampling process in the time domain. The proposed methods achieve good SNR-independent performance in the Rayleigh fading channels

Keywords

Doppler effect; Rayleigh channels; correlation methods; frequency estimation; mobile radio; time-domain analysis; ACF; COV; LCR; Rayleigh fading channel; ZCR; autocorrelation function; bandwidth adjustment technique; channel-adaptive technique; covariance function; downsampling process; level crossing rate; maximum Doppler frequency estimator; mobile radio communication system; resource management method; time domain; zero crossing rate; Additive noise; Autocorrelation; Bandwidth; Frequency estimation; Land mobile radio; Optimization methods; Resource management; Signal analysis; Signal to noise ratio; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on

Conference_Location

Berlin

Print_ISBN

9.7838007291e+012

Type

conf

DOI

10.1109/PIMRC.2005.1651906

Filename

1651906