Doubly selective fading channel estimation in MIMO OFDM systems

查看全文 作　　者：YU Xiaoyan WANG Jiaqing YANG Luxi HE [1]Zhenya

机构地区：[1]Department of Radio Engineering, Southeast University, Nanjing 210096, China

出　　处：《Science in China(Series F)》索引2005年第48卷第6期,共13页

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.60272046); the Major Project(Grant No.604963 10);National High Technology Project of China(Grant No.2002AA123031);National Natural Science Foundation of Jiangsu Province(Grant No.BK2005061); the Grant of PhD Programmes in High Education Institutes of MOE(Grant No.20020286014). 摘　　要：High data transmission rates and high mobility give rise to time- and frequency-selectivity in wireless communication channels. This paper investigated time and frequency doubly selective channel estimation using pilot tones among Multi-Input Multi-Output (MIMO) orthogonal frequency division multiplexing (OFDM). Firstly, a complex exponential basis expansion channel model (BECM) was introduced to represent doubly selective channel during an OFDM symbol period; then, based on BECM, an effective MIMO-OFDM doubly selective channel estimation method was presented; finally, the optimality in designing pilot tones parameters was done according to the minimization of channel estimation MSE, mainly including the number, the placement and the structure of pilot tones. Simulation results show that the proposed estimation method has good performance in doubly selective channel scenarios and confirms the theoretical analysis findings. 关键词：OFDM 正交频分复用系统双选择通道扩展通道通信技术

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Doubly selective fading channel estimation in MIMO OFDM systems

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