%0 Journal Article
%T A Simple Differential Modulation Diversity in the Presence of Unknown Multipath<br>无需信道估计的一种简单的差分分集OFDM传输方式
%A Lu Jun-zhe
%A Zhang Hai-lin
%A Liu Zeng-ji
%A <br>吕浚哲
%A 张海林
%A 刘增基
%J 电子与信息学报
%D 2004
%I 
%X Recent years, space-time coding technique is gotten more attention. However, the space-time coding application is often under non-frequency-selective channel while the channel knowledge is known. All of these constrains the application of space-time coding. This paper presents a differential modulation diversity used in the presence of unknown multi-path. The proposed technique utilizes orthogonal frequency division multiplexing (OFDM) transforming a frequency selective fading channel into multiple flat fading sub-channels. Based on this, a space-time-frequency configuration applied in unknown frequency selective fading channel is given. And this method is verified by the simulation results.
%K OFDM
%K Differential
%K Diversity
%K Space-time coding<br>正交频分复用
%K 差分
%K 分集
%K 时空编码
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=7BBACA0D909E127E&yid=D0E58B75BFD8E51C&vid=96C778EE049EE47D&iid=E158A972A605785F&sid=323E8A365B085E0B&eid=1918ADDC93A85779&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=12