Space-time processing for wireless communications
Paulraj, A.J.
Papadias, C.B.
Inf. Syst. Lab., Stanford Univ., CA, USA;
This paper appears in: Signal Processing Magazine, IEEE
Publication Date: Nov 1997
Volume: 14,
Issue: 6
On page(s): 49-83
ISSN: 1053-5888
References Cited: 161
CODEN: ISPRE6
INSPEC Accession Number: 5771852
Digital Object Identifier: 10.1109/79.637317
Current Version Published: 2002-08-06
Abstract
Space-time processing can improve network capacity, coverage, and
quality by reducing co-channel interference (CCI) while enhancing
diversity and array gain. This article focuses largely on the receive
(mobile-to-base station) time-division multiple access (TDMA) (nonspread
modulation) application for high-mobility networks. We describe a large
(macro) cell propagation channel and discuss different physical effects
such as path loss, fading delay spread, angle spread, and Doppler
spread. We also develop a signal model incorporating channel effects.
Both forward-link (transmit) and reverse-link (receive) channels are
considered and the relationship between the two is discussed. Single-
and multiuser models are treated for four important space-time
processing problems, and the underlying spatial and temporal structure
are discussed as are different algorithmic approaches to reverse link
space-time professing with blind and nonblind methods for single- and
multiple-user cases. We cover forward-link space-time algorithms and we
outline methods for estimation of multipath parameters. We also discuss
applications of space-time processing to CDMA, applications of
space-time techniques to current cellular systems, and industry trends
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