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多用户MIMO系统低复杂度收发联合波束成形方法 被引量：5

Joint Beamforming Scheme with Low Complexity for Multiuser MIMO System
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摘要 基于多用户多输入多输出(MIMO)有限反馈系统提出了一种收发联合波束成形方法。该方法在发送端采用每个用户酉速率控制(PU2RC)波束成形技术,在接收端采用基于信干噪比(SINR)最大化的天线合并算法。天线合并算法利用用户SINR的广义Rayleigh熵特性寻找最佳的天线合并矢量。仿真结果表明,该方法能充分利用信道信息,不仅改善了传统PU2RC系统的和速率性能,相对于已有的迫零(ZF)联合波束成形方法,对信道状态信息的量化误差的敏感性更低,用户选择算法的复杂度更低,且低速率反馈条件下和速率性能更优。 A joint beamforming scheme is presented for multiuser multiple-input multiple-output （MIMO） system with limited feedback. The proposed scheme uses per-user unitary rate control （PU2RC） at the transmitter and the signal-to-interferenle-plus-noise-ratio （SINR）- maximization-based antenna combining algorithm at the receiver, which searchs optimal receive combiner by using a generalized Rayleigh-Ritz method. Simulation results show that the scheme makes full use of channel information and improves the performance of the conventional PU2RC system. It outperforms the zero forcing （ZF） joint beamforming schemes in terms of sensitivity to the channel state information （CSI） quantization error, complexity of user selection, and sum rate in the case of low feedback rate conditions.
作者 卢敏 酆广增
机构地区 南京邮电大学通信与信息工程学院
出处 《数据采集与处理》 CSCD 北大核心 2012年第4期417-421,共5页 Journal of Data Acquisition and Processing
基金 国家博士后研究基金(20090451239)资助项目
关键词 多输入多输出 波束成形 天线合并 有限反馈 MIMO beamforming antenna combining limited feedback
分类号 TN929.5 [电子电信—通信与信息系统]
  • 相关文献

参考文献13

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二级参考文献8

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共引文献1

同被引文献99

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引证文献5

二级引证文献28

数据采集与处理
2012年 第4期

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