Orthogonal Procrustes-Based Semi-Blind Channel Estimation for MIMO-OFDM Systems
This paper introduces a novel semi-blind channel estimation algorithm based on Orthogonal Procrustes (OP) approach for Multiple Input Multiple Output (MIMO) systems using Orthogonal Frequency Division Multiplexing (OFDM) modulation. The presented joint estimator is based on decomposition of channel matrix H as a whitening matrix R and a unitary rotation matrix Q. The whitening matrix R can be estimated blindly based on the eigenvalue decomposition (EVD) of the received signal correlation matrix, while Q has to be fed by using the properties of the constrained OP estimator for an orthogonal pilot sequence. The estimation gain is obtained by the power method with low complexity as it offers such optimum rotation matrices which are parameterized a fewer number of parameters. Various numerical examples are conducted to support the algorithms and analysis, and they demonstrate improved performance up to 3-5 dB compared to exclusively training-based estimation.
semi-btind channel estimation MIMO-OFDM OP EVD
Hu Feng Li Jianping Yang Gang
School of Information Engineering Communication University of China Beijing China
国际会议
The 2nd IEEE International Conference on Advanced Computer Control(第二届先进计算机控制国际会议 ICACC 2010)
沈阳
英文
226-230
2010-03-27（万方平台首次上网日期，不代表论文的发表时间）