文献类型：期刊文献

中文题名：一种新的基于伪导频搜索的MB-LSF信道估计算法

英文题名：A New MB-LSF Channel Estimation Algorithm Based on Pseudo-Pilot Searching

作者：朱竞[1];袁伟娜[1];朱煜[1];黄如[1]

机构：[1]华东理工大学信息科学与工程学院,上海200237

年份：2014

卷号：40

期号：6

起止页码：758

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：中央高校基本科研业务费专项资金

语种：中文

中文关键词：伪导频;最小二乘拟合;信道估计

外文关键词：pseudo-pilot; least-square-fitting; channel estimation

摘要：针对伪导频搜索算法复杂度高的情况,对基于伪导频的MB-LSF信道估计算法进行了研究。提出先估计导频位置的信道响应,然后通过线性插值得到所有位置的信道响应,进而检测得到伪导频的估计值,将其作为第1次搜索的符号。理论分析和仿真结果都证明了这种新算法在不影响信道估计性能的前提下,能够很大程度地降低伪导频的搜索次数。
The pseudo-pilots searching algorithm has high complexity. Hence, a new MB-LSF chan estimation algorithm based on pseudo-pilot searching is proposed in this paper. The channel response pilot positions is first estimated. And then, all the other channel responses are obtained by using lin interpolation. Thus, the detection of pseudo-pilots is achieved, which is further used as the first sea symbol. Both the theorical analysis and simulation results show that the proposed algorithm can larg decrease the research times of pseudo-pilots without degrading the performance of channel estimation.