MIMO-OFDM系统中基于导频序列相关的信道估计  

Channel Estimation for MIMO-OFDM System Based on Correlation of Pilot Sequences

作　　者：郑恒峰[1] 靳传学[1] 陈继明[1] 唐友喜[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,成都610054

出　　处：《电子科技大学学报》2007年第S2期1041-1043,共3页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金重大项目(60496313;60272009)

摘　　要：针对多天线正交频分复用系统,提出了一种利用频域导频时域相关进行信道估计的方法。该算法的关键是训练序列的自相关特性,利用所产生的训练序列,在频域可以容易地得到信道的频域响应;在时域,可以根据一些插值方式获得相邻两个训练符号之间数据符号衰落值的估计。仿真结果表明谊算法能够获得良好的信道估计性能,并且计算复杂度较小。A channel estimation method for Multiple-Input Multiple-Output-Orthogonal Frequency Division Multiplexing(MIMO-OFDM)system by using correlation of pilot sequences has been proposed in this paper.The main point of this algorithm is the autocorrelation of the sequences.By using these training sequences,channel frequency response can be got easily in frequency domain.In time domain,we can get the data fading values which are between the adjacent pilot training symbols by some means of interpolation.Simulation results indicate that this method can obtain good system performance and with low complexity.

关 键 词：相关性 多输入多输出 正交频分复用 训练序列设计 

分 类 号：TN919.3[电子电信—通信与信息系统]