Title :
Enhancement of site selection diversity transmit power control in CDMA cellular systems
Author :
Takano, Nahoko ; Hamabe, Kojiro
Author_Institution :
Dev. Labs., NEC Networks, Yokohama, Japan
fDate :
6/23/1905 12:00:00 AM
Abstract :
In CDMA cellular systems, site selection diversity transmit (SSDT) power control is employed during soft handover to reduce interference in the downlink. In SSDT, mobile stations select a cell from active cells during soft handover based on the received power of common pilot signals. The selected cells transmit data signals, and the other cells suspend transmission of data signals. We introduce multiple-SSDT as a natural extension of SSDT, and three approaches to enhance the performance of SSDT are presented. With the enhancements, it is possible to eliminate residual frame errors, and to optimize the measurement period of common pilot signals. Also it is possible to reduce interference with efficient transmission of control signals
Keywords :
cellular radio; code division multiple access; diversity reception; interference suppression; power control; telecommunication control; telecommunication signalling; CDMA cellular systems; code division multiple access; control signals; frame error elimination; interference reduction; pilot signals; site selection diversity transmit power control; soft handover; Cellular networks; Diversity methods; Downlink; Interference; Multiaccess communication; Power control; Propagation losses; Radio control; Radio network; Signal processing;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956847
