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| Content Provider | IEEE Xplore Digital Library | 
|---|---|
| Author | Yongzhe Xie Raghothaman, B. | 
| Copyright Year | 2002 | 
| Description | Author affiliation: Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA (Yongzhe Xie) | 
| Abstract | Most research on transmit antenna diversity assumes ideal diversity branches, which is not true in practice. In addition, comparative studies on different transmit diversity schemes for 3G-CDMA are available, but mainly through simulation. In this paper, we compare the performance of spacetime spreading (STS), orthogonal transmit diversity (OTD), and transmit adaptive array (TxAA) in different channel and diversity conditions in the presence of cross correlation and cross-polarization discrimination (XPD), through analysis of the Chernoff bound of the pair-wise error probability. We show that the design criterion of the outer code for all the schemes is the same as that of the coded transmission with one transmit antenna for both fast and slow fading channels, and not affected by non-ideal diversity branches. The interleaver design is shown to be important. STS outperforms OTD for both slow and fast fading conditions. STS and OTD are relatively robust to crosscorrelation, but sensitive to the power discrimination between diversity branches. TxAA outperforms all the other schemes, but its power gain over STS reduces with cross-correlation. | 
| Starting Page | 245 | 
| Ending Page | 249 | 
| File Size | 398581 | 
| Page Count | 5 | 
| File Format | |
| ISBN | 0780374843 | 
| DOI | 10.1109/VTC.2002.1002701 | 
| Language | English | 
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Publisher Date | 2002-05-06 | 
| Publisher Place | USA | 
| Access Restriction | Subscribed | 
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Subject Keyword | Transmitting antennas Sociotechnical systems Receiving antennas Fading Polarization Phase shift keying Adaptive arrays Pairwise error probability Space stations Mobile antennas | 
| Content Type | Text | 
| Resource Type | Article | 
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