MIMO-OFDM系统信道估计算法综述  

Review on the Channel Estimation Algorithms for MIMO-OFDM Systems

作　　者：王甫莉[1] 阔永红[1] 陈健[1] 刘献玲[1] 

机构地区：[1]西安电子科技大学通信工程学院,陕西西安710071

出　　处：《电子科技》2007年第2期73-75,共3页Electronic Science and Technology

摘　　要：MIMO-OFDM技术是近年来通信信号处理领域的研究热点,无线信道不仅是频率选择性的,而且是时变的,为了获得较高的系统性能,信道估计就显得尤为重要。对MIMO-OFDM系统中现有的信道估计算法进行了综述,重点介绍了基于训练序列的、导频符号的以及盲和半盲信道估计算法。比较了各种算法的优缺点,提出了未来信道估计的发展方向。The research of MIMO-OFDM has received much attention in the communication signal processing field. However, for the wireless mobile communication systems, the radio channel is frequency selective and time-varying. In order to improve the performance of MIMO-OFDM systems, it is especially important to estimate the channel accurately. The existing channel estimation algorithms for MIMO-OFDM are reviewed, which focus on training-sequence, pilot-symbols-aided, blind and semi-blind channel estimation. Finally, the algorithms are compared and the trend of development of channel estimation in the future is proposed.

关 键 词：多输入多输出 正交频分复用 信道估计 

分 类 号：TN911[电子电信—通信与信息系统]