%0 Journal Article
%T A MMSE Channel Estimator Based on Adaptive Order Determination in OFDM Systems<br>OFDM系统基于自适应定阶的MMSE信道估计
%A Xu Yi-tao
%A Wang Cheng-gui
%A <br>徐以涛
%A 王呈贵
%J 电子与信息学报
%D 2007
%I 
%X MMSE estimator is a common channel estimator in coherent OFDM systems. Against mismatch problem of MMSE estimator, an improved MMSE channel estimator based on adaptive order determination is proposed. This algorithm estimates the maximum multipath delay, and calculates the channel autocorrelation function adaptively, it is shown that the proposed method performance is close to the optimal matched MMSE estimator.
%K OFDM
%K MMSE
%K Adaptive order determination<br>正交频分复用
%K 最小均方误差估计
%K 自适应定阶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=4C998BFC866E1AB6&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=CA4FD0336C81A37A&sid=7555FB9CC973F695&eid=2B5DE8A23DCEED39&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=5&reference_num=5