%0 Journal Article
%T An Improved Approach of Pilot Design for MIMO OFDM Systems<br>一种改进的MIMO OFDM系统导频设计方案
%A Hu Die He Liang-hua
%A <br>胡蝶
%A 何良华
%J 电子与信息学报
%D 2009
%I 
%X For Multi-Input Multi-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems with virtual subcarriers, conventional equispaced pilot tones are no longer applicable in some situations. To obtain the optimal pilot sequence in such cases, this paper proposes an improved pilot-design approach based on the criterion of minimum Mean-Square-Error (MSE) of the Least Squares (LS) channel estimate. The proposed approach can quickly and efficiently find the optimal pilot sequence, or suboptimal pilot sequences when the optimal ones do not exist. The simulation results demonstrate the effectiveness of the proposed approach.
%K MIMO
%K OFDM<br>信道估计
%K 导频序列
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=74287FE3AB57B377E79C0505B4B4A836&yid=DE12191FBD62783C&vid=4AD960B5AD2D111A&iid=E158A972A605785F&sid=971ECAFE8682845B&eid=BF1420E7E18952EE&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=1&reference_num=8