%0 Journal Article
%T A Short-Time Fourier Transform Based Symbol Timing Atpproach for OFDM Systems<br>一种基于短时傅里叶变换的OFDM时间同步方法
%A Kuang Yu-jun
%A Yue Guang-xin
%A <br>邝育军
%A 乐光新
%J 电子与信息学报
%D 2004
%I 
%X A blind short-time Fourier transform based approach for symbol timing in OFDM systems is proposed. The key of the described algorithm leans upon the periodic 2-D time-frequency spectrum structure. By searching the flat regions in the time direction of time-frequency spectrum of the received signal, ISI-free intervals are estimated, where optimum symbol start can be easily located. Simulation results show that the proposed algorithm is quite robust against low SNR environment, and outperforms time-domain correlation based algorithms.
%K OFDM
%K Time synchronization
%K Cyclic prefix
%K Short-time Fourier transform (STFT)<br>正交频分复用
%K 时间同步
%K 循环前缀
%K 短时傅里叶变换
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=64A84D4A38728196&yid=D0E58B75BFD8E51C&vid=96C778EE049EE47D&iid=38B194292C032A66&sid=FB36B1C076A263FA&eid=D9202C57BAB9096F&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=10