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信道估计从大的角度可以分为非盲估计和盲估计以及在此基础上产生的半盲估计。半盲估计在数据传输效率和收敛速度之间做一个折中,即采用较少的训练序列来获得信道的信息。文章详细介绍了基于子空间分解的半盲信道估计的算法。
Channel estimation from a large point of view can be divided into non-blind estimates and blind estimates and based on the resulting semi-blind estimates. Semi-blind estimation makes a trade-off between the efficiency of data transmission and the convergence rate, that is, it uses less training sequence to obtain the information of channel. The article introduces the algorithm of semi-blind channel estimation based on subspace decomposition in detail.