期刊文献+

智能天线系统中上行多用户相干信号的分离与DOA估计方法研究 被引量:5

Uplink separation and DOA estimation method for multiuser correlated signals in smart antenna system
下载PDF
导出
摘要 本文研究了平衰落信道中的空间特征估计问题。提出了一种基于循环累量的多用户空间特征估计算法 ,并将该算法用于智能天线中的SDMA实现。该算法构造了循环累量域空间特征矩阵 ,通过对空间特征循环矩阵的特征分解可以得到用户信号的空间特征估计。并以此为基础 ,设计了用于上行多波束成形的空间滤波器组 ,实现了上行多用户信号的分离 ,利用空间滤波器的空间频率响应确定共信道多用户信号的DOA。 In this paper,the problem of the spatial signature estimation for flat fading channel is addressed A multi user spatial signature estimation algorithm is presented and applied to smart antenna systems(SAS) The algorithm constructs a new matrix called spatial signature cyclic matrix in cyclic cumulant domain,and estimates multiuser spatial signature through eigen decomposition of spatial signature cyclic matrix Based on the estimation of spatial signature,the uplink spatial filter bank is designed to implement uplink source separation,and DOA of the co channel multi users can be found through the spatial frequency response of the corresponding spatial filter
出处 《通信学报》 EI CSCD 北大核心 2000年第5期14-17,共4页 Journal on Communications
基金 国家"86 3"计划基金资助项目!(86 3- 317- 96 0 3- 0 7- 4 ) 西安交通大学研究生院博士学位论文基金
关键词 空分多址 空间特征 智能无线系统 用户信号 DOA space division multiple access spatial signature multi beamforming
  • 相关文献

参考文献1

二级参考文献6

  • 1李世鹤,中国通信学会95’论文集,1995年,839页
  • 2Tong L,IEEE Trans Inf Theor,1994年,40卷,2期,340页
  • 3王朴中,天线原理,1993年
  • 4Xu G,In Proc IEEE ICASSP’95,1729页
  • 5Lin H P,Proc IEEE ICASSP’95,1760页
  • 6Liu H,Proc IEEE ICASSP’95,1756页

共引文献12

同被引文献30

  • 1刘树德 罗景青 张剑云.空间谱估计及其应用[M].合肥:中国科学技术大学出版社,1997..
  • 2Cadzow J.A. A high resolution direction-of-arrival algorithm for narrow-band coherent and incoherent sources. IEEE Trans. Acoust., Speech, Signal Processing, 1988, 36(7): 965-979
  • 3Agrawal M, Prasad S. A modified likelihood function approach to DOA estimation in the presence of unknown spatially correlated gaussian noise using a uniform linear array. IEEE Trans. Signal Processing, 2000, 48(10): 2743-2749
  • 4LIU De-Shu, LUO Jing-Qing, ZHANG Jian-Yun. Spatial Spectral Estimation and Its Applications.Hefei:
  • 5Godara L C. Application of Antenna Array to Mobile Communications,Part I:Performance Improvement, Feasibility and System Considerations[J].Proc.IEEE, 1997,85(7):1031-1060.
  • 6Tsoulos G. Wireless Personal Communications for the 21th Century: European Technological Advances in Adaptive Antennas[J]. IEEE Com. Magazine,1997,35(9):102-109.
  • 7Choi S, Shim D, Sarkar T K. A Comparison of Tracking-Beam Arrays and Switching-Beam Arrays Operation in a CDMA Mobile Communication Channel[J]. IEEE Antennas and Propagation Magazine, 1999,41(6):10-21.
  • 8Dasilva J S, Arroyo B, Barni B, et al. European Third Generation Mobile Systems[J].IEEE Commun.Mag., 1996,34(10):68-83.
  • 9Tanaka T, Miura R, Chiba I. An ASIC Implementation Scheme to Realize a Beam Space CMA Adaptive Array Antenna[J].IEICE Trans.Commun.,1995, E78-B(11): 1467- 1473.
  • 10Karasawa Y. The Software Antenna: A New Concept of Kaleidoscopic Antenna in Multimedia Radio and Mobile Computing Era[J]. IEICE Trans. Commun., 1997, E80-B(8):1214-1217.

引证文献5

二级引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部