%0 Journal Article
%T Performance Improvement of Time-Varing OFDM Channel Estimation and Equalization using ICI Self-Cancellation<br>利用ICI自消除改善OFDM系统时变信道估计与均衡的性能
%A Qin Wen
%A Peng Qi-cong
%A <br>秦文
%A 彭启琮
%J 电子与信息学报
%D 2008
%I 
%X Rapidly time-varying channels degrade the performance of the Orthogonal Frequency Division Multiplexing (OFDM) due to severe InterCarrier-Interference (ICI). The most effective method of canceling the ICI is frequency equalization. But, it relies on precise channel estimation. Basis Expansion Model (BEM) can approximate time-varying channel accurately. And since then, only some finite model parameters need to be estimated to reconstruct the channel. However, the pilot-symbol-aided parameter estimation is still significantly affected by ICI from near non-pilot-symbol. So, in this work an ICI-self-cancellation parameter estimation method is proposed for BEM, by utilizing the high correlation between subcarrier ICIs. Simulations show better performance than the simplex BEM methods.
%K OFDM<br>信道估计
%K 基扩展信道模型
%K 子载波间干扰自消除
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=5C1E84D46F738E5841F5B882A6A11B63&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=9CF7A0430CBB2DFD&sid=4B5EFEE8F5D7C671&eid=E4F478FAB2F30367&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=8