Title :
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
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.760666
