Doubly selective fading channel estimation in MIMO OFDM systems

作     者：YU Xiaoyan WANG Jiaqing YANG Luxi HE Zhenya 

作者机构：Department of Radio Engineering Southeast University Nanjing 210096 China 

出 版 物：《Science in China(Series F)》 (中国科学（F辑英文版）)

年 卷 期：2005年第48卷第6期

页      面：795-807页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

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) 

主　　题：MIMO-OFDM doubly selective channels channel estimation basis expansion channel model. 

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.