Title :
Impact of synchronization on receiver performance in wideband CDMA networks
Author :
Cheikhrouhou, Karim ; Affes, Sofiene ; Mermelstein, Paul
Author_Institution :
Ecole Nat. d´´Ingenieurs de Tunis, Tunisia
fDate :
Oct. 29 2000-Nov. 1 2000
Abstract :
Synchronization may severely impact the capacity or spectrum efficiency of wideband CDMA networks. Evaluations of the uplink capacity for improved STAR and the 2D-RAKE with both perfect and active synchronization indicate that synchronization with the early-late gate component of a RAKE-type receiver may constitute a bottleneck for any performance improvement. Enhancement of synchronization remains a key issue. Results also suggest that STAR offers a promising alternative to the 2D-RAKE with early-late gate, offering on average an increase in spectrum efficiency of more than 100% in the presence of synchronization errors at both data rates of 9.6 and 144 kbps.
Keywords :
broadband networks; cellular radio; channel capacity; code division multiple access; multipath channels; multiuser channels; radio links; radio networks; radio receivers; signal detection; synchronisation; 144 kbit/s; 2D-RAKE; 9.6 kbit/s; STAR; active synchronization; cellular CDMA systems; early-late gate; multipath detection update; network capacity; perfect synchronization; receiver performance; spectrum efficiency; synchronization errors; uplink capacity; wideband CDMA networks; Channel coding; Degradation; Intelligent networks; Multiaccess communication; Power control; Power generation; RAKE receivers; Receiving antennas; Signal generators; Wideband;
Conference_Titel :
Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-6514-3
DOI :
10.1109/ACSSC.2000.910954
