Title :
Space-time transmitter diversity schemes for wideband CDMA
Author :
Correia, Américo ; Hottinen, Ari ; Wichman, Risto
Author_Institution :
Inst. Supierior Tecnico, Portugal
Abstract :
Previous work on transmitter antenna diversity has shown that the use of multiple transmitter antennas at the base station results in improved performance due to increase of diversity (path diversity). This happens with no bandwidth cost, the signal quality along several paths is very poor, but the receiver estimates the channel with accuracy. This paper evaluates the effects of channel estimation errors in the performance of space-time transmitter diversity (STTD) for wideband code division multiple access (WCDMA). Comparison is made with the selective transmitter diversity (STD) scheme for different fading channel models
Keywords :
Rayleigh channels; broadband networks; code division multiple access; diversity reception; error statistics; land mobile radio; multipath channels; multiuser channels; parameter estimation; radio networks; radio transmitters; transmitting antennas; WCDMA; base station; channel estimation; channel estimation errors; fading channel models; multipath Rayleigh fading channel; multiple transmitter antennas; path diversity; performance; selective transmitter diversity; signal quality; space-time transmitter diversity; transmitter antenna diversity; wideband CDMA; wideband code division multiple access; Broadband antennas; Channel estimation; Closed loop systems; Downlink; Fading; Multiaccess communication; Receiving antennas; Transmitters; Transmitting antennas; Wideband;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851469
