导频设计的MIMO-OFDM改进信道估计算法  

Improved Channel Estimation Algorithm of MIMO-OFDM Combined with Optimal Pilot Design

作　　者：田玮[1] 宋常建[1] 钟子发[1] 张玉[1] 

机构地区：[1]电子工程学院,合肥230037

出　　处：《火力与指挥控制》2013年第8期51-54,共4页Fire Control & Command Control

基　　金：国防预研基金资助项目(41101040603)

摘　　要：为提高系统的传输效率并改善信道估计的性能,提出了一种结合优化导频设计的分段带阻滤波算法。采用优化的导频设计,该算法在少量增加计算复杂度的基础上,能够进一步提高信道估计的性能,与实际中广泛应用的经典时域滤波算法相比,具有更高的估计精度。仿真结果证明该算法适用于不同的信道环境,尤其在低信噪比的条件下,该算法能够明显降低信道估计的MSE。To improve the transmission rate and enhance the performance of channel estimation,an optimal pilot design based on channel estimation algorithm by using piecewise band-stop filter is proposed.The method adopting optimal pilot design is capable of improving the performance of channel estimation effectively on condition that the computation complexity increases slightly.In comparison with the classical time domain filter algorithm,it has a better estimation precision.Simulation results show that this method is applicable to different channel circumstance,and especially in the condition of low SNR,it can decrease the MSE of channel estimation obviously.

关 键 词：信道估计 MIMO-OFDM 导频设计 

分 类 号：TN929.53[电子电信—通信与信息系统]