Title :
System-level benefit of combined power control and multiuser detection for CDMA uplink over a frequency selective channel
Author :
Ataman, Stefan ; Wautier, Armelle
Author_Institution :
Service Radioelectricite et Electronique, SUPELEC, Gif-sur-Yvette, France
Abstract :
This paper analyzes the benefit of power control and multiuser linear detection for CDMA uplink transmissions. Several papers have recently shown a benefit for such an approach in the case of synchronous uplink transmissions without multipath propagation. We study the impact of a multipath channel on the system level performance. ZF and MMSE multiuser block linear receivers are considered for various scenarios to compare them and to analyze the influence of multipath propagation and of out-cell interference. The results are compared to the performance obtained with a RAKE receiver.
Keywords :
code division multiple access; fading channels; interference (signal); least mean squares methods; multipath channels; multiuser detection; power control; radio receivers; radiowave propagation; CDMA uplink; MMSE; RAKE receiver; ZF; combined power control; frequency selective fading channel; minimum mean squared error; multipath channel; multipath propagation; multiuser block linear receiver; multiuser dectection; out-cell interference; synchronous uplink transmission; system-level benefit; zero forcing; Fading; Frequency; Intersymbol interference; Multiaccess communication; Multipath channels; Multiple access interference; Power control; Power system modeling; Quality of service; RAKE receivers;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
DOI :
10.1109/PIMRC.2004.1368385
