DocumentCode :
1251450
Title :
Interference subspace rejection: a framework for multiuser detection in wideband CDMA
Author :
Affes, Sofiène ; Hansen, Henrik ; Mermelstein, Paul
Author_Institution :
INRS-Telecommunications, Quebec Univ., Montreal, Que., Canada
Volume :
20
Issue :
2
fYear :
2002
fDate :
2/1/2002 12:00:00 AM
Firstpage :
287
Lastpage :
302
Abstract :
We present a unifying framework for a new class of receivers that employ linearly-constrained interference cancellation (IC). The associated multiuser detectors operate in various modes and options ranging in performance from that of IC detectors to that of linear receivers, yet provide more attractive performance/complexity tradeoffs. They exploit both space and time diversities as well as the array-processing capabilities of multiple antennas and carry out simultaneous channel and timing estimation, signal combining and interference rejection. Additionally, they can operate on both links and in multiple mixed-rate traffic scenarios. The improved performance can be translated to increased utilization of wideband code division multiple access networks, particularly at high data rates
Keywords :
array signal processing; broadband networks; cellular radio; code division multiple access; interference suppression; multiuser channels; parameter estimation; radio links; radio receivers; radiofrequency interference; signal detection; telecommunication traffic; array-processing; cellular radio; channel estimation; high data rates; interference rejection; interference subspace rejection; linear receivers; linearly-constrained interference cancellation; multiple antennas; multiple mixed-rate traffic; multiuser detection; performance/complexity tradeoffs; receivers; signal combining; space diversity; time diversity; timing estimation; wideband CDMA; wideband code division multiple access networks; Broadband antennas; Detectors; Diversity reception; Downlink; Interference cancellation; Multiaccess communication; Multiuser detection; Power control; Quality of service; Wideband;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/49.983344
Filename :
983344
Link To Document :
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