%0 Journal Article
%T Channel estimation method for rapidly time-vary channel based on high-order data fitting in OFDM systems<br>基于高次数据拟合OFDM系统快时变信道估计算法
%A DUAN Peng
%A HE Ming-yi
%A XUE Min-biao
%A DANG Qun
%A <br>段鹏
%A 何明一
%A 薛敏彪
%A 党群
%J 计算机应用研究
%D 2011
%I 
%X In order to further reduce the calculation complexity and estimated parameter, proposed a novel channel estimation method for rapidly time-vary channel based on data fitting. Utilized the periodic characteristic of PN sequence, separated channel into some blocks in an OFDM symbol in time domain, the number of estimated parameter could be reduced; then used the high-order data fitting method, the more pilot tones could be used in data fitting, finally, calculated the residual error of fitting parameter, got the optimum fitting parameter, and improved the accuracy of channel estimation efficiently. Theory and experiments show that method of validate in rapidly time-vary channel circumstances.
%K OFDM
%K channel estimation
%K time-vary channel
%K high-order data fitting<br>正交频分复用
%K 信道估计
%K 时变信道
%K 高次数据拟合
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=2DBCCD1AB72632987B98811E6F5E6A94&yid=9377ED8094509821&vid=D3E34374A0D77D7F&iid=0B39A22176CE99FB&sid=8243B77967FFD12E&eid=47122BA7BE181C5A&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=13