MI MO-OFDM channel estimation based on PCA
A semi-blind channel estimation based on PCA was proposed for the multi-input multi-output orthogonal frequency division multiplexing (MMO-OFDM) system. The scheme makes use of the pilots to estimate the channel impulse response based on least square criteria firstly. Then to improve the estimation performance, a PCA approach was applied to track the varying of the channel, which using a variable step-size RLS through a neural network. Since this method was performed in frequency domain, it was not necessary to know the length of the channel. Compared with existing approaches, the proposed method had a high precision and a good performance to track the variations of the fading channels. The simulations show the effectiveness of the new scheme.
MIMO-OFDM channel estimation PCA
Cai hua Zhao Xiao-hui
College of Communication Engineering Jilin University Changchun China
国际会议
长春
英文
300-303
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）