DocumentCode :
377350
Title :
Synchronization sensitivity of enhanced CDMA array-receivers to fast channel time-variations and to shaping-pulse design
Author :
Cheikhrouhou, Karim ; Affes, Sofiéne ; Mermelstein, Paul
Author_Institution :
Ecole Nationale d´´Ingenieurs de Tunis, Tunisia
Volume :
1
fYear :
2001
fDate :
4-7 Nov. 2001
Firstpage :
429
Abstract :
We previously reported on the severe impact synchronization errors may have on the spectrum efficiency of wideband CDMA networks and on the significant performance gains of STAR (spatio-temporal array receiver) over the 2D-RAKE at similar order in complexity. Here we further enhance the 2D-RAKE performance by incorporating a high-resolution early-late gate with a clamping state and further reduce the complexity of STAR. New complexity and performance assessments indicate that STAR, at a comparable computational load, increases its performance advantage over the enhanced 2D-RAKE in the presence of fast channel time-variations even with pulse distortions or at different rolloff factors.
Keywords :
antenna arrays; cellular radio; code division multiple access; computational complexity; radio receivers; synchronisation; time-varying channels; 2D-RAKE; CDMA; STAR; antenna-arrays; array-receivers; cellular system; channel time-variations; shaping-pulse design; spatio-temporal array receiver; spectrum efficiency; synchronization errors; wideband CDMA networks; Clamps; Convolution; Convolutional codes; Multiaccess communication; Power control; Power generation; RAKE receivers; Signal generators; Telecommunications; Wideband;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
ISSN :
1058-6393
Print_ISBN :
0-7803-7147-X
Type :
conf
DOI :
10.1109/ACSSC.2001.986964
Filename :
986964
Link To Document :
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