Title :
Multiuser detector with transmit diversity in the convolutionally coded DS/CDMA systems
Author :
Yong, Wang ; Feng, Wang Hai ; Xiao-Hu, Yu ; ShiXin, Cheng
Author_Institution :
Nat. Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
Transmit diversity can significantly improve system performance by providing diversity gain against Rayleigh fading channels for downlink CDMA systems. In this paper, a delay transmit diversity scheme combined with multiuser detection is proposed for the convolutionally coded CDMA systems. The performance of the proposed detector is evaluated and compared with the uncoded system and the conventional coded system without multiuser detection. The simulation results show that the significant improvement can be achieved in the system performance
Keywords :
Rayleigh channels; code division multiple access; convolutional codes; delays; diversity reception; land mobile radio; multiuser channels; radio links; radio receivers; radio transmitters; signal detection; spread spectrum communication; BER; Rayleigh fading channels; convolutionally coded DS/CDMA systems; delay transmit diversity; diversity gain; downlink CDMA systems; mobile radio; multiuser detector; performance; receiver model; simulation results; system performance; transmitter model; uncoded system; Convolutional codes; Delay; Detectors; Diversity methods; Downlink; Fading; Multiaccess communication; Multiple access interference; Multiuser detection; Receiving antennas;
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.2000.851518
