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