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MIMO-MAC中改进的空时码传输方案 被引量：2

Improved Space-Time Coded Transmission Scheme for MIMO-MAC
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摘要 为了消除两用户的多输入多输出多址接入信道(MIMO-MAC)中用户间的干扰,提出了一种基于有限反馈的空时码传输方案.每个用户采用基于相位旋转的速率为2的空时码,每个码字自身需要一个反馈角度,对接收信号进行简单相加后可消除多用户干扰,实现全分集.与MIMO-MAC中已有的基于有限反馈的空时码传输方案相比,所提方案增大了接收端的信噪比,提高了系统的可靠性. An improved space-time coded transmission scheme with limited feedback is proposed in order to eliminate interference for two-user multi-input multi-output multiple access channels （MIMO-MAC）. Each user employs rate-2 space-time block code with phase rotation, which requires a phase feedback. The multiuser interference is eliminated through simple addition of the received signal, and full diversity is realized. The signal to noise ratio is increased in the proposed scheme and the system performance is improved compared with the existing space-time coded transmission scheme with limited feedback.
作者 田心记 倪水平 胡紫巍 张延良
机构地区 河南理工大学计算机科学与技术学院 北京邮电大学信息与通信工程学院
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2013年第4期95-98,共4页 Journal of Beijing University of Posts and Telecommunications
基金 国家自然科学基金项目(61104079 61202286)
关键词 多输入多输出 多址接入信道 空时码 多用户干扰 有限反馈 multi-input multi-output multiple access channels space-time code multi-user interfer-ence limited feedback
分类号 TN911.22 [电子电信—通信与信息系统]
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二级参考文献13

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同被引文献25

  • 1Wang Jiu-teng.Maximum-minimum throughput for MIMO systems in cognitive radio networks[J].IEEE Transactions on Vehicular Technology,2014,63(1):217-224.
  • 2Gesbert D,Shafi M,Shiu D.From theory to practice:an overview of MIMO space-time coded wireless systems [J].IEEE Journal on Selected Areas in Communications,2003,21(3):281-302.
  • 3Bhatangar M,Hjrungnes A,Song L.Linear precoding of STBC over correlated rice MIMO channels[J].IEEE Transactions on Wireless Communications,2010,9(6):1832-1836.
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  • 6Sezginer S,Sari H.On high-rate full-diversity 2×2 space-time codes with low-complexity optimum detection[J].IEEE Transactions on Communications,2009,57(5):1532-1541.
  • 7Jiang C L,Wang M M,Shu F.Multi-user MIMO with limited feedback using alternating codebooks [J].IEEE Transactions on Communications,2012,60(2):333-338.
  • 8Wang Jiu-teng.Joint MMSE equalization and power control for MIMO system under multi-user interference [J].IEEE Communications Letters,2012,16(1):54-56.
  • 9Maddah-Ali M,Motahari A,Khandani A.Communication over MIMO X channels:Interference alignment,decomposition,and performance analysis [J].IEEE Transactions on Information Theory,2008,54(8):3457-3470.
  • 10Rao Xiong-bin,Ruan Liang-zhong, Lan K N.Csi feedback reduction for mimo interference alignment[J].IEEE Transactions on Signal Processing,2013,61(18):4428-4437.

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北京邮电大学学报
2013年 第4期

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