Performance of site selection diversity transmission in WCDMA

Author

Coulon, Pierre ; Vadgama, Sunil

Author_Institution

Fujitsu Labs. of Eur. Ltd, Hayes, UK

Volume

1

fYear

2002

fDate

27-30 Oct. 2002

Firstpage

72

Abstract

Soft handoff is considered to be essential in direct sequence-code division multiple access (DS-CDMA) based mobile communication systems. However the interference resulting from the transmissions from multiple base sites in the forward link during the soft handoff constrains the multiple access capacity. Site selection diversity transmission (SSDT) technique is able to mitigate the interference caused by transmissions from the multiple base sites. The 3^rd Generation Partnership Project (3GPP) has specified this technique for the W-CDMA FDD component of UMTS. This paper describes the SSDT technique and presents capacity simulation results. It is shown that the capacity gain is dependent on the Doppler speed of mobile terminals and correlation of shadow fading between adjacent cells.

Keywords

3G mobile communication; Rayleigh channels; broadband networks; cellular radio; channel capacity; code division multiple access; diversity reception; multipath channels; multiuser channels; radio links; radio networks; radiofrequency interference; radiowave propagation; spread spectrum communication; 3^rd Generation Partnership Project; 3GPP; DS-CDMA; Doppler speed; Rayleigh fading; SSDT; UMTS; W-CDMA FDD; WCDMA; capacity gain; capacity simulation results; cellular radio; direct sequence-code division multiple access; forward link; interference; mobile communication systems; mobile terminals; multipath channel model; multiple access capacity; multiple base sites transmission; performance; shadow fading; site selection diversity transmission; soft handoff; 3G mobile communication; Analytical models; Base stations; Discrete event simulation; Downlink; Europe; Interference constraints; Laboratories; Multiaccess communication; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on

ISSN

1347-6890

Print_ISBN

0-7803-7442-8

Type

conf

DOI

10.1109/WPMC.2002.1088134

Filename

1088134