一种适用于DVB-T系统的信道估计算法  

A Channel Estimation Algorithm for DVB-T Systems

作　　者：吴王华[1] 刘志[1] 周晓方[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海200433

出　　处：《微电子学与计算机》2007年第8期56-58,62,共4页Microelectronics & Computer

摘　　要：提出了一种基于导频的信道估计算法,该算法在最小平方误差(LS)算法的基础上采用两维插值的方法估计出无线信道的频域响应,即在时域上进行线性插值,然后利用最大似然(ML)算法进行频域插值。在地面数字视频广播(DVB-T)系统中的仿真结果表明,该复合算法具有较高的性能。A new pilot-based channel estimation algorithm is proposed in this paper. The proposed algorithm which is based on least square error algorithm adopts tow-dimensional interpolation technique to estimate the frequency response of wireless channel, that is, performing linear interpolation in time domain first and then maximum-likelihood interpolation in frequency domain. Simulation based on DVB-T system shows that the proposed algorithm provides good performance.

关 键 词：信道估计 正交频分复用 地面数字视频广播 

分 类 号：TN911.5[电子电信—通信与信息系统]