Eigen-based Doppler estimation for differentially coherent CPM

Author

Austin, Mark D. ; Stüber, Gordon L.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

43

Issue

3

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

781

Lastpage

785

Abstract

Eigen-based methods are developed for obtaining fast and accurate Doppler estimates in both land-mobile satellite and urban microcellular applications. By showing that the correlations of a set of differentially processed CPM signals have the same form as the autocorrelations of a complex exponential in noise, eigen-based spectral estimation techniques are used to provide improved Doppler estimates in noise. The eigen-based Doppler estimators are shown to have significantly less variance and mean square error than previously proposed Doppler estimators that use only simple averaging

Keywords

Doppler effect; cellular radio; eigenvalues and eigenfunctions; estimation theory; phase modulation; radiowave propagation; satellite relay systems; signal processing; spectral analysis; CPM signals; Doppler estimates; autocorrelations; complex exponential; correlations; differentially coherent CPM; eigen-based Doppler estimation; eigen-based spectral estimation; land-mobile satellite; mean square error; noise; urban microcellular applications; variance; AWGN; Additive white noise; Attenuation; Autocorrelation; Doppler shift; Frequency estimation; Gaussian noise; Mean square error methods; Rician channels; Signal processing;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.312767

Filename

312767