Power control for diversity reception in time-division duplex CDMA

Author

Ghauri, Irfan ; Knopp, Raymond

Author_Institution

Mobile Commun. Dept., Inst. Eurecom, Sophia Antipolis, France

Volume

3

fYear

1998

fDate

18-21 May 1998

Firstpage

2343

Abstract

Power control possibilities are explored for the downlink of a time-division duplex (TDD) CDMA system while employing three different kinds of multipath diversity combining schemes namely the RAKE, the pre-RAKE and the transmit antenna pre-selection. In the latter two, knowledge of the channel characteristics is employed at the base-station to provide maximum decoupling between users on the downlink. Performance of the these receivers is compared in a Rayleigh fading urban environment. It is shown that power control is absolutely indispensable in the latter two schemes and results in considerable performance gains as compared to the RAKE receiver

Keywords

Rayleigh channels; cellular radio; code division multiple access; diversity reception; multipath channels; power control; radio links; radio receivers; spread spectrum communication; telecommunication control; transmitting antennas; DS-CDMA; RAKE; RAKE receiver; Rayleigh fading; TDD CDMA system; base-station; cellular radio; channel characteristics; diversity reception; downlink; multipath diversity combining; power control; pre-RAKE; time-division duplex CDMA; transmit antenna pre-selection; urban environment; Diversity reception; Downlink; Fading; Multiaccess communication; Multipath channels; Performance gain; Power control; RAKE receivers; Rayleigh channels; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1998. VTC 98. 48th IEEE

Conference_Location

Ottawa, Ont.

ISSN

1090-3038

Print_ISBN

0-7803-4320-4

Type

conf

DOI

10.1109/VETEC.1998.686177

Filename

686177