Canonical space-time processing in CDMA systems

Author

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

Author_Institution

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

Volume

5

fYear

1999

fDate

1999

Firstpage

2611

Abstract

We propose a canonical space-time receiver structure for wireless communications based on front-end processing with respect to a fixed basis that is independent of the true channel parameters. The basis is dictated by a canonical characterization of channel propagation dynamics in terms of discrete multipath delays, Doppler shifts, and directions of arrival that capture the essential degrees of freedom in the received signal. In addition to dramatically reducing the number of channel parameters to be estimated, performance analysis demonstrates that canonical space-time receivers can deliver optimal performance at substantially reduced complexity compared to existing designs

Keywords

Doppler shift; array signal processing; code division multiple access; delay estimation; direction-of-arrival estimation; mobile radio; multipath channels; multiuser channels; radio receivers; CDMA systems; DOA; Doppler shifts; canonical space-time receiver structure; channel parameters; channel propagation dynamics; directions of arrival; discrete multipath delays; front-end processing; mobile radio; multiuser communication; optimal performance; reduced complexity; space-time processing; wireless communications; Apertures; Base stations; Delay estimation; Direction of arrival estimation; Doppler shift; Multiaccess communication; Performance analysis; Propagation delay; Sensor arrays; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on

Conference_Location

Phoenix, AZ

ISSN

1520-6149

Print_ISBN

0-7803-5041-3

Type

conf

DOI

10.1109/ICASSP.1999.760666

Filename

760666