Title :
Investigation of a combined power control scheme for a time-division duplex CDMA system
Author :
Chang, Jiang ; Wang, Wenbo ; Yang, Dacheng
Author_Institution :
Wireless Commun. Center, Beijing Univ. of Posts & Telecommun., China
Abstract :
Time-Division Duplex (TDD)-CDMA technique is now accepted as a candidate of 3rd generation mobile communication system (IMT-2000). As for Code Division Multiple Access (CDMA) system, power control is essential to mitigate the “Near-Far” effect and improve the system performance. A TDD system requires a special power control scheme due to its link characteristics. In this paper we present a combined power control in TDD and also investigate its performance by computer simulations. The simulation results show that the proposed power control scheme can overcome the deficiency of open-loop power control and work well in a TDD-CDMA scenario
Keywords :
cellular radio; code division multiple access; time division multiplexing; IMT-2000; Near-Far effect; combined power control scheme; deficiency; link characteristics; third-generation mobile communication system; time-division duplex CDMA system; Base stations; Fading; Mobile communication; Multiaccess communication; Power control; Power generation; Random variables; Rayleigh channels; Shadow mapping; System performance;
Conference_Titel :
Circuits and Systems, 2000. IEEE APCCAS 2000. The 2000 IEEE Asia-Pacific Conference on
Conference_Location :
Tianjin
Print_ISBN :
0-7803-6253-5
DOI :
10.1109/APCCAS.2000.913402
