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线性接收机方案下的分层码本有限反馈预编码 被引量：1

Limited Feedback Precoding System Based on Hierarchical Codebook with Linear Receiver
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摘要 该文分析了线性接收机方案下传统Grassmann码本的性能缺失,并通过分析酉阵扰动对系统误码率及信道容量性能的影响,建立应用于多天线系统线性接收机方案下的由Grassmann主码本与酉阵扰动子码本共同构成的分层码本体系,与之对应的是两步码字选择准则。对于子码本的建立,该文提出了基于旋转矩阵和基于householder变换两种方案,并通过计算机仿真阐释了分层码本体系对于传统单码本预编码在系统误码率及信道容量等方面的性能优势。 The performance loss of conventional Grassmannian codebook is analyzed. According to the analysis of unitary perturbation＇s effects on channel capacity as well as the BER, a novel hierarchical codebook consisting of a Grassmannian main-codebook and a perturbation subcodebook proposed for multi-antenna systems with linear receivers is established, and corresponds with the two-step codeword selection scheme that uses the product of two codewords respectively selected from the main-codebook and the sub one as the ultimate precoder. Specifically to the design of subcodebook, two schemes is brought forward： rotation-based and householder transformation-based, and the superiority of the proposed codebook in terms of both the channel capacity and BER is further confirmed by computer simulations.
作者 朱隽 黄永明 杨绿溪
机构地区 东南大学信息科学与工程学院
出处 《电子与信息学报》 EI CSCD 北大核心 2009年第10期2432-2437,共6页 Journal of Electronics & Information Technology
关键词 预编码 分层码本 酉阵扰动子码本 Precoding Hierarchical codebook Unitary perturbation subcodebook
分类号 TN911.22 [电子电信—通信与信息系统]
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参考文献10

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同被引文献16

  • 1Small cell forum. Small cells-what's the big idea[EB/OL]. [2014 - 08 - 10], http://www, smallcellfortm, org.
  • 2Femtoforum. Interference management in OFDMA femtocells [EB/OL]. [2014 - 08 - 10]. http://www, femtoforum, org.
  • 3David L P, Chu X L. On the expanded region of picoeells inhete- rogeneous networks[J]. IEEE Journal of Selected Topics in Signal Processing, 2012, 6(3) : 281 - 294.
  • 4Lee D, Seo H, Clerekx B. Coordinated multi-point transmission and reception in LTE-advanced: deployment scenarios and ope- rational challenges [J]. IEEE Communications Magazine, 2012, 50 (11) .-44 - 50.
  • 5Qiang L, Yang Y, Shu F. Coordinated beamforming in downlink CoMP transmission system[C]//Proc, of the 5th International ICST Conference on Communications and Networking in Chi- na, 2010:1-5.
  • 6Zhu J, Yang H C. Interference control with beamforming coor- dination for two tier femtocell networks and its performance analysis[C]//Proc, of the IEEE International Conference on Communications, 2011 : 1 - 5.
  • 7Busche H, Vanaev A, Rohling H. SVD-based MIMO precodingand equalization schemes for realistic channel knowledge: designcri teria and performance evaluation[J]. Wireless Personal Commu nications, 2009, 48(3) :347 - 359.
  • 8Wang J, Wu M Q, Zheng F. The codebook design for MIMO pre- coding systems in LTE and LTE A[C]//Proc. of the Wireless Corn- 7nunications , Netzvorking and Mobile Computing, 2010 : 1 - 4.
  • 9Huang Y M, Xu D F, Yang L X. Codebook design for EUTRA MIMO precoding [J]. The Journal of China Universities of Posts and Telecommunications, 2008 (1) : 23 - 27.
  • 10Ekpenyong A E, Huang Y F. Feedback constraints for adaptive transmission[J]. Signal Processing Magazine ,2907,24(3) :69 - 78.

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电子与信息学报
2009年 第10期

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