Title :
CDMA downlink system capacity enhancement through generalized RAKE reception
Author :
Wang, Y. P Eric ; Bottomley, Gregory E.
Author_Institution :
Ericsson Inc., Research Triangle Park, NC, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
The benefit of generalized RAKE reception to downlink system capacity is studied. System capacity is evaluated for certain cell and user outage probabilities. Fast fading, noise correlation, power control, and soft handoff are all included in our study. The site selection diversity transmission (SSDT) approach to power allocation between soft handoff links is shown to be optimal in the sense that it minimizes total transmit power to a given user. Numerical results show that G-RAKE receivers can improve system capacity by as much as 30-45% in a highly dispersive channel
Keywords :
cellular radio; channel capacity; code division multiple access; dispersive channels; fading channels; minimisation; power control; probability; radio receivers; telecommunication control; G-RAKE receivers; SSDT; WCDMA; capacity enhancement; cell outage probability; cellular radio; dispersive channel; downlink system capacity; fast fading; generalized RAKE reception; noise correlation; power allocation; power control; site selection diversity transmission; soft handoff links; transmit power minimization; user outage probability; Colored noise; Dispersion; Diversity reception; Downlink; Fading; Interference suppression; Multiaccess communication; Power control; RAKE receivers; Signal to noise ratio;
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.2001.956961
