Title :
Performance evaluation of space-time spreading and orthogonal transmit diversity in CDMA2000
Author :
Wu, Gang ; Wang, Haifeng ; Cheng, Shixin ; Lilleberg, Jorma
Author_Institution :
Nat. Mobile Commun. Res. Laboratorv, Southeast Univ., Nanjing, China
Abstract :
Space-time spreading (STS) and orthogonal transmit diversity (OTD) are two transmit diversity schemes proposed by the cdma2000 standard. In this paper, performance comparison analysis of the two transmit diversity schemes in multipath channels under multiuser situation are carried out. Link level simulation in forward link cdma2000 is performed in IMT-2000 channel. Performance analysis and simulation results show that the performance improvement provided by STS over OTD decreases as the increase of propagation path number and decrease of the user number.
Keywords :
3G mobile communication; channel coding; multipath channels; multiuser channels; space-time codes; spread spectrum communication; IMT-2000 channel; cdma2000 standard; forward link; link level simulation; multipath channels; multiuser channels; orthogonal transmit diversity; performance comparison; performance evaluation; propagation path number; space-time spreading; Baseband; Fading; Filtering; Mobile antennas; Mobile handsets; Performance analysis; Performance gain; Rayleigh channels; Sociotechnical systems; Transmitting antennas;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on
Print_ISBN :
0-7803-7627-7
DOI :
10.1109/ISSSTA.2002.1048557
