%0 Journal Article
%T A Detection Algrithm Based on Joint Time and Frequency Offset Estimation for OFDM in HF Communications<br>基于时频联合估计的短波OFDM的检测算法
%A Kan Chun-rong
%A Wang Ting-chang
%A <br>阚春荣
%A 王庭昌
%J 电子与信息学报
%D 2005
%I 
%X Against the character of HF channels, this paper presents an OFDM synchronization detection scheme, which uses m sequence to modulate the pilot symbols. Based on joint time and frequency-offset estimation, synchronization detection can be implemented using the correlation peak of the m sequence in low SNR. Theoretical analysis shows the right selection of range for decision threshold. Monte Carlo simulation results show the scheme has good performance with a reliable detection probability and a low false alarm probability under low SNR( - 10dB).
%K Orthogonal Frequency Division Multiplex(OFDM)
%K Detection
%K Low SNR
%K Pseudo Noise(PN) sequence<br>正交频分复用(OFDM)
%K 检测
%K 低信噪比
%K 伪随机噪声(PN)序列
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=6E1B23EBFA712244&yid=2DD7160C83D0ACED&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=E002FF26604EFFAB&eid=E9F71A2A3584AD5D&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=12