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空间相关对发射分集系统的多用户分集性能的影响 被引量：6

Impact of Spatial Correlation on the Combination of Transmit Diversity and Multiuser Diversity
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摘要 研究空间相关对发射分集结合调度策略的多用户系统下行链路性能的影响.推导出发射天线之间存在空间相关的条件下,TxAA(Transm itAdaptive A rray)、STBC(Space-T im e B lock Coding)结合调度策略的多用户系统平均容量的表达式,在此基础上研究其平均容量.通过仿真验证理论分析的有效性.结果表明,发射天线之间的空间相关性会提高多用户系统的平均容量,另外TxAA在各种相关条件下的系统平均容量都优于STBC. The paper studies the impact of transmitter spatial correlation on the performance of multiuser system in the downlink. Exact expressions for the average channel capacity of the multiuser diversity systems combined with TxAA and STBC respectively are derived, and the average capacity is analyzed. The simulation results are consistent with the analysis results ,which show that the transmitter spatial correlation improves the average capacity of the multiuser diversity system, and under the comparison of the average capacity, the TxAA scheduler outperforms the STBC scheduler.
作者 唐冬 杨亮 张广驰 秦家银
机构地区 中山大学信息科学与技术学院电子与通信工程系
出处 《电子学报》 EI CAS CSCD 北大核心 2006年第4期761-764,共4页 Acta Electronica Sinica
基金 教育部"高等学校优秀青年教师教学科研奖励计划"基金 广东省科技计划(No.2005B10101001) 湖南省高等学校科学研究(No.05C479)
关键词 多天线系统 空间相关 多用户分集 调度策略 发射分集 multi-antenna systems spatial correlation multiuser diversity packet scheduling transmit diversity
分类号 TN911.5 [电子电信—通信与信息系统]
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参考文献13

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共引文献15

同被引文献74

  • 1王自力,龚耀寰.MIMO宏小区窄带信道模型的相关性能分析[J].电波科学学报,2005,20(1):37-42. 被引量：14
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引证文献6

二级引证文献21

电子学报
2006年 第4期

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