Combined time-reversal space-time block coding and transmit beamforming for frequency-selective fading channels

被引:1
|
作者
Jonietz, Christof [1 ]
Gerstacker, Wolfgang H. [1 ]
Schober, Robert [2 ]
机构
[1] Univ Erlangen Nurnberg, Inst Mobile Commun, D-91058 Erlangen, Germany
[2] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V5Z 1M9, Canada
关键词
D O I
10.1109/ICC.2008.743
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
Transmit beamforming (BF) with reliable channel state information at the transmitter (CSIT) can improve the system performance significantly. On the other hand, for unreliable CSIT pure space-time coding outperforms transmit BF. In this paper, the combination of time-reversal space-time block codes (TR-STBCs) and transmit BF for transmission over frequency-selective fading channels is considered. The proposed scheme takes the reliability of the CSIT into account in an optimum way. For unreliable CSIT, the proposed scheme yields the same diversity gains as a TR-STBC, whereas for reliable CSIT significant BF gains can he obtained in addition to the diversity gain of the TR-STBC.
引用
收藏
页码:3955 / 3960
页数:6
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