%0 Journal Article
%T EM-Based Joint Channel Estimation and Data Detection Algorithm<br>基于EM的联合信道参数估计和数据检测算法
%A Zhang Rui-ping
%A Zhang Tai-yi
%A Gong Zheng-wei
%A <br>张蕊萍
%A 张太镒
%A 龚政委
%J 电子与信息学报
%D 2006
%I 
%X To improve transmission efficiency, Expectation Maximization(EM) based channel parameters estimation iteration algorithm is proposed, employed the special features of Orthogonal Frequency Division Multiplexing (OFDM) system. Channel impulse response is updated at each iteration, furthermore the noise variance is update also. To improve the algorithm convergence, EM-based joint channel parameters estimation and data detection algorithm is proposed. Simulation results demonstrate the proposed EM-based algorithm can converge to the case with known channel parameters with fewer pilots and the joint channel parameters estimation and data detection algorithm converges significantly fast.
%K Orthogonal Frequency Division Multiplexing (OFDM)
%K Coherent detection
%K Channel Estimation(CE)
%K Expectation Maximization (EM) algorithm<br>正交频分复用
%K 相关检测
%K 信道估计
%K EM算法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=BF4F8C05BF07FE44&yid=37904DC365DD7266&vid=D3E34374A0D77D7F&iid=708DD6B15D2464E8&sid=E8101C99E403BAC0&eid=93C927FBCA96CB53&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=10