欢迎访问中国科学院大学学报,今天是
简报

下行多用户MIMO中基于SLNR的迭代用户功率分配

  • 谢磊 ,
  • 邱玲
展开
  • 中国科学技术大学个人通信与扩频实验室, 合肥 230027

收稿日期: 2012-05-07

  修回日期: 2012-09-26

  网络出版日期: 2013-07-15

基金资助

国家科技重大专项课题(2010ZX03002-003-01)支持 

Leakage-based precoding with iterative power allocation in multi-user MIMO downlink

  • XIE Lei ,
  • QIU Ling
Expand
  • Personal Communications Network and Spectrum Spread Lab, University of Sciences and Technology of China, Hefei 230027, China

Received date: 2012-05-07

  Revised date: 2012-09-26

  Online published: 2013-07-15

摘要

在下行多用户多输入多输出(MU-MIMO)场景下,考虑最大化信号泄漏噪声比(Max-SLNR)预编码,提出一种通过迭代方法进行用户间功率分配的算法. 通过与已有用户功率分配算法的比较,该算法进一步提高了系统吞吐量. 仿真结果表明,本算法可以通过减少迭代次数降低算法复杂度,而几乎不损失系统性能.

本文引用格式

谢磊 , 邱玲 . 下行多用户MIMO中基于SLNR的迭代用户功率分配[J]. 中国科学院大学学报, 2013 , 30(4) : 572 -576 . DOI: 10.7523/j.issn.2095-6134.2013.04.021

Abstract

To enhance the sum rate of maximizing signal-to-leakage-and-noise ratio (Max-SLNR) in the downlink multi-user multiple-input multiple-output (MU-MIMO) system, we propose an iterative power allocation scheme. Compared with conventional power allocation schemes, the proposed scheme achieves higher system throughput. Numerical results show that the complexity of the scheme is reduced by decreasing the number of iteration without losing system throughput.

参考文献

[1] Costa M. Writing on dirty paper[J]. IEEE Transactions on Information Theory, 1983, 29: 439-441.

[2] Tarighat A, Sadek M, Sayed A. A multi user beamforming scheme for downlink MIMO channels based on maximizing signal to leakage ratios //IEEE International Conference on Acoustics, Speech, and Signal Processing. 2005: 1129-1132.

[3] Zakhour R, Gesbert D. Coordination on the MISO interference channel using the virtual SINR framework //IEEE Work-shop Smart Antennas. 2009:17-18.

[4] Sadek M, Tarighat A. A leakage-based precoding scheme for downlink multi-user MIMO channels[J]. IEEE Transations on Wireless Communaction, 2007, 6(5):1711-1721.

[5] Sadek M, Aissa S. Leakage based precoding for multi-user MIMO-OFDM systems[J]. IEEE Transations on Wireless Communaction, 2011, 10(8): 2428-2433.

[6] P Cheng, M Tao, W Zhang. A new SLNR based linear precoding for downlink multi-user multi-stream MIMO systems[J].IEEE Communaction Letters,2010,14(11):1008-1010.

[7] Feng S, Wang M, Tingting L. Leakage based precoding with power allocation for multicellular multiuser MIMO downlink[J]. Electronics Letters 25th, 2010, 46(24): 1629-1630.

[8] Feng S, Wang M, Yaxi W. An efficient power allocation scheme for leakage-based precoding in multi-cell multiuser MIMO downlink[J]. IEEE Communaction Letters, 2011, 15(10):1053-1055.

[9] 张光澄. 非线性最优化计算方法[M]. 北京:高等教育出版社,2005.

文章导航

/