Paper Info
Title
Maximum-Diversity Transmissions Over Time-Selective Wireless Channels
Abstract
Carrier frequency-offsets and mobility-induced Doppler shifts introduce time-selectivity in wireless links. Doppler-RAKE receivers have been developed for collecting the resulting diversity gains only for spread-spectrum systems. Relying on a basis expansion model of time-selective channels, we find that the maximum achievable Doppler diversity is determined by the rank of the correlation matrix of the channel's expansion coefficients. We also prove that RAKE reception can not collect maximum diversity gains, unless the transmission is appropriately designed. Finally, we design such block precoded transmissions to ensure maximum diversity gains, and provide thorough simulations to corroborate our theoretical findings.
Year
DOI
Venue
2002
10.1109/WCNC.2002.993547
WCNC 2002: IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE RECORD, VOLS 1 & 2
Keywords
Field
DocType
rake receiver,spread spectrum,time frequency analysis,correlation matrix,fading,oscillators,radio receivers,transmitters,doppler shift,frequency diversity,channel coding,scattering,convolution,mobile communications,spread spectrum communication
Mobile radio,Diversity scheme,Telecommunications,Wireless,Computer science,Fading,Communication channel,Real-time computing,Electronic engineering,Covariance matrix,Mobile telephony,Spread spectrum
Conference
ISSN
Citations 
PageRank 
1525-3511
11
0.83
References 
Authors
11
2
Name
Order
Citations
PageRank
Xiaoli Ma153732.48
G. B. Giannakis2114641206.47