Performance analysis of several open-loop transmit diversity schemes for IMT-2000 systems

Author

Qiang, Yongquan ; Li, Daoben

Author_Institution

Beijing Univ. of Posts & Telecommun., China

Volume

2

fYear

2003

Firstpage

1107

Abstract

Space-time transmit diversity, as an effective scheme to mitigate multipath fading, has been proposed for IMT-2000 systems. Space-time transmit diversity (STTD) has been adopted as an open loop diversity scheme for WCDMA. Orthogonal transmit diversity (OTD) and space-time spreading (STS) are two optional schemes for cdma2000. This paper focuses on their differences in principle and performance. Theoretical analysis presents that the schemes of OTD, STS and STTD are similar in terms of spread structure. Simulation results show that STS scheme have 3 dB advantage over STTD. STS and STTD have better performance than OTD and NTD (none transmit diversity) scheme.

Keywords

3G mobile communication; code division multiple access; diversity reception; space-time codes; spread spectrum communication; IMT-2000 systems; WCDMA; cdma2000; multipath fading; none transmit diversity; open-loop transmit diversity scheme; orthogonal transmit diversity; space-time coding; space-time spreading; space-time transmit diversity; spreading structure; wireless code division multiple access; Decision support systems; Decoding; Fading; Multiaccess communication; Performance analysis; Receiving antennas; Signal processing; Sociotechnical systems; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Technology Proceedings, 2003. ICCT 2003. International Conference on

Print_ISBN

7-5635-0686-1

Type

conf

DOI

10.1109/ICCT.2003.1209724

Filename

1209724