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CDMA信道的盲均衡和多用户检测 被引量:1

Blind Equalization and Multiuser Detection in CDMA Channels
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摘要 把码分多址 (CDMA)信道等效为一多输入多输出 (MIMO)信道模型 ,用子空间分解的盲估计方法进行信道估计 ,而且估计出信号子空间特征向量 ,利用信道参数和信号子空间的特征向量构建解相关和最小均方误差 (MMSE)两类线性检测器 ,能同时消除码间干扰 (ISI)和多址干扰 (MAI)。 Firsty,CDMA channel is modeled as a multipleinput multiple-output(MIMO) channel.Then the channel is estimated using the blind subspace method and the eigen vector of signal subspace is evaluated.Two types of linear detector,zero-forcing detector and Minimum Mean Square Error(MMSE) detector,can be constructed using channel parameters and engen vectors of signal subspace.They can suppress both Inter Symbol Interference(ISI) and Multi-Access Interference(MAI).
出处 《南京邮电学院学报》 2001年第1期48-52,共5页 Journal of Nanjing University of Posts and Telecommunications(Natural Science)
关键词 码分多址 盲均衡 多用户检测 信道 Code division multiple access Blind equalization Multiuser detection
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参考文献7

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同被引文献7

  • 1Papadias C B,Slock T M.Fractionally spaced equalization of linear polyphase channels and related blind techniques based on multichannel linear prediction[J].IEEE Trans.Signal Processing,1999,47:641-653.
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  • 3Tong L,Xu G,Kailath T.Blind identification and equalization based on second-order statistics:A frequency-domain approach[J].IEEE Trans.Inform.Theory,1995,41:329-334.
  • 4Moulines E,Duhamel P,Cardoso J F,et al.Subspace methods for the blind identification of multichannel FIR filters[J].IEEE Trans.Signal Processing,1995,43:516-525.
  • 5Li X,Fan H.Direct estimation of blind zero-forcing equalizers based on second-order statistics[J].IEEE Trans.Signal Processing,2000,48:2 211-2 218.
  • 6陈芳炯,韦岗.一种基于二阶统计量的盲信道均衡[J].数据采集与处理,2001,16(2):133-138. 被引量:4
  • 7张晋,张辉.子空间方法盲多用户检测技术分析与探索[J].电讯技术,2003,43(2):93-96. 被引量:1

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