Improved scheme with cooperative diversity based on distributed space-time block coding

被引：0
|
作者：
Du Na & Xu Dazhuan Coll.of Information Science & Technology
机构：
来源：
Journal of Systems Engineering and Electronics | 2009年 / 20卷 / 03期
关键词：
multiple input multiple output; cooperative diversity; distributed space-time block coding; multicarrier CDMA;
D O I：
暂无
中图分类号：
TN911.2 [信息论];
学科分类号：
070104 ; 081101 ;
摘要：
An improved scheme with cooperative diversity based on distributed space-time block coding(WCD-DSTBC) is proposed,which effectively achieves diversity gains and improves the performance of the system by sharing some single-antenna users’antennas to form a virtual antenna array and combining with distributed spacetime block coding(DSTBC)mode.Then the relation between the system BER and the interuser BER for WCD-DSTBC scheme is theoretically derived and the closed-form expression of BER for WCD-DSTBC system is obtained. The simulation results show that the proposed WCD-DSTBC scheme achieves distinct gains over the non-cooperative multi-carrier CDMA(MC-CDMA)system.When system BER is le-3 and interuser BER is le-3,about 2.5 dB gain can be gotten.When interuser channel state information(CSI)outgoes the users’individual CSI,about 3 dB gain is also achieved.
引用
收藏
页码：463 / 469
页数：7
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