A canonical space-time characterization of mobile wireless channels

Author

Sayeed, Akbar M. ; Onggosanusi, Eko N. ; Van Veen, Barry D.

Author_Institution

Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA

Volume

3

Issue

4

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

94

Lastpage

96

Abstract

A canonical space-time characterization of mobile wireless channels is introduced in terms of a fixed basis that is independent of the true channel parameters. The basis captures the essential degrees of freedom in the received signal using discrete multipath delays, Doppler shifts, and directions of arrival. This provides a robust representation of the propagation dynamics and dramatically reduces the number of channel parameters to be estimated. The resulting canonical space-time receivers deliver optimal performance at substantially reduced complexity compared to existing designs.

Keywords

Doppler shift; array signal processing; delays; direction-of-arrival estimation; land mobile radio; multipath channels; radio receivers; signal representation; space-time adaptive processing; time-varying channels; Doppler shifts; antenna arrays; canonical space-time characterization; canonical space-time receivers; channel parameters; degrees of freedom; directions of arrival; discrete multipath delays; mobile wireless channels; optimal performance; propagation dynamics; received signal; reduced complexity; robust representation; space-time signal processing; time-varying multipath propagation environment; Apertures; Bandwidth; Delay estimation; Dispersion; Doppler shift; Parameter estimation; Propagation delay; Robustness; Scattering; Sensor arrays;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.757199

Filename

757199