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干扰距离最远的多用户多天线干扰对齐算法

Optimized interference alignment algorithm for multi-user MIMO based on longest interference distance principle
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摘要 针对多用户多天线中小区边缘用户同频干扰问题,提出了一种基于干扰距离最远准则的多用户MIMO干扰对齐优化算法,通过对等效干扰信道进行SVD分解,选择与等效干扰信道矩阵距离最大的特征子信道作为传输预编码矩阵,并分析了算法复杂度以及空间相关性对性能的影响,仿真结果显示系统频谱效率较原始算法在8天线下有31.57%的提高。 Focused on the co-channel interference of multi-user MIMO cell edge users, this article presented an optimized interference alignment based on longest interference distance principle. Through SVD decomposed the equivalent interference channel, selected the sub-channel, which is furthest from the equivalent interference channel as the transmission pre-coding matrix. It analyzes the complexity of the algorithm and the impact of Spatial correlation on performance. The simulation results show that compared the original algorithm the system spectral efficiency is increased by 31.57% with 8 antennas.
作者 杨东霖 周志刚 何华明
机构地区 中国科学院上海微系统与信息技术研究所
出处 《信息技术》 2013年第10期70-73,共4页 Information Technology
基金 中科院重点部署项目(KGZD-EW-103-5(4)) 重大专项(2010ZX03003-004 2011ZX03004-003)
关键词 多用户多天线 干扰对齐 预编码 协作优化 multi-user MIMO interference alignment pre-code cooperative interference
分类号 TN929.53 [电子电信—通信与信息系统]
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参考文献7

  • 1Maddah-Ali M, Motahari A, Khandani A. Signaling over MIMO multi-base systems; combination of multi-access and broadcast schemes [ C]. IEEE International Symposium on Itfformatiort Theory (ISIT) ,Seattle, WA,Jul. 2006:2104 -2108.
  • 2Cadambe VR, Jafar SA. Interference Alignment and Degrees of Free- dom of the K-User Interfexence ChannEl J]. IEEE Transactions on Information Theory, Aug. 2008,54 ( 8 ) : 3425 - 3441.
  • 3Gomadam KS, Cadambe SA, Jafar SA. Approaching the capacity of wireless networks through distributed interference alignment [ C ]. IEEE Global Telecommunications Conference (GLOBECOM), Nov. 30 - Dec. 4,2008.
  • 4Peters SW, Heath Jr RW. Interference alignment via alternating mini- mization[ C ]. IEEE International Conference on Acoustics, Speech, and Signal Process/rig(ICASSP) ,Taipei ,Apr. 2009.
  • 5Raj Kumar K, Feng Xue. An Iterative ALgorithm for Joint Signal and Interference AlignmentE C. IEEE ISIT 2010, Austin, Texas, U. S. A. ,Jun. 13 - 18,2010.
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  • 7王存祥,邱玲.协作多点传输中一种基于特征子信道的干扰对齐预编码矩阵优化方案[J].信号处理,2011,27(3):395-399. 被引量：18

二级参考文献8

  • 1Sung H, Park S H, I,ee K J, Lee I, "A Two-stage Pre- coding Method based on Interference Alignment for Inter- ference Channel Systems", IEEE GLOBECOM 2009.
  • 2Zelst A V, Hammerschmidt J S, "A Single Coefficient Spatial Correlation Model for Multiple-input Multiple-out- put Radio Channels", Proc. General Assembly of the Int. Union of Radio Science (URSI) , Maastricht, The Neth- erlands, August 2002.
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  • 4Somekh O, Zaidel B M, Shamai S,"Sum rate charateriza- ton fo joint multiple cell-site processing [ J ~", IEEE Transactions on Information Theory, 2007.
  • 5Maddah-Ali M A, Motahari A S, Khandani A K, "Com- munication over MIMO X Channels: Interference Align- ment, Decomposition, and Performance Analysis", IEEE Trans on Information Theory, August 2008.
  • 6Cadambe V R, Jafar S A, "Interference Alignment and Spatial Degrees of Freedom for the K User Interference Channel", IEEE Trans on Information Theory 2008.
  • 7Gomadam K, Cadambe V R, Jafar S A, " Approaching the Capacity of Wireless Networks through Distributed In- terference Alignment", IEEE Trans on bfformation Theo- ry, 2008.
  • 8Shen M, Madsen A H, Vidal J, "An Improved Interfer- ence Alignment Scheme for Frequency Selective Chan- nels", ISIT 2008.

共引文献17

信息技术
2013年 第10期

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