%0 Journal Article
%T Blind Estimation of OFDM Sub-carrier Frequencies Based on the High-Order Cyclic Cumulants<br>基于高阶循环累积量的OFDM子载波盲估计
%A Zheng Wen-xiu
%A Zhao Guo-qing
%A Luo Ming
%A <br>郑文秀
%A 赵国庆
%A 罗明
%J 电子与信息学报
%D 2008
%I 
%X Aiming at the real application of the communication countermeasures and OFDM signal demodulation, a method is proposed to estimate the sub-carriers of OFDM signal using the high-order cyclic cumulants. Due to the fact that the high-order cyclic cumulants can suppress the stationary and non-stationary Gaussian noise, it is proved by theoretical analysis under the above noise background that the specific four-order cyclic cumulants of the OFDM signal with the 2/4 PSK modulation exist only at the location of its sub-carriers, so that the sub-carrier estimation can be implemented by detecting the cyclo-frequencies, The proposed method can also be popularized on the OFDM signal with star-QAM and high-order PSK modulation. And simulation proves the effectiveness of the proposed method.
%K Military electronic countermeasures
%K OFDM
%K Carrier estimation
%K Cumulants<br>通信对抗
%K OFDM
%K 载波估计
%K 累积量
%K 高阶循环累积量
%K OFDM
%K 子载波
%K 盲估计
%K Cumulants
%K Cyclic
%K Based
%K Estimation
%K 有效性
%K 实验验证
%K 仿真
%K 星形
%K 算法
%K 循环频率
%K 检测
%K 存在
%K 四阶
%K 调制
%K 噪声背景
%K 分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=CC0423AB445BE681C0712BB7DA5DA581&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=0B39A22176CE99FB&sid=C7DDDE86E6286CD9&eid=31125890FF093250&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=12