%0 Journal Article
%T Adaptive Modulation in FDD Communications over a Fading Channel<br>FDD方式下的自适应调制的研究
%A Fang Xin
%A Xu Xiao-dong
%A Gao Xi-qi
%A YOU Xiao-hu
%A <br>方昕
%A 徐晓东
%A 高西奇
%A 尤肖虎
%J 电子与信息学报
%D 2005
%I 
%X In this paper adaptive modulation in Frequency Division Duplexing(FDD) communications over a fading channel is studied and packet structure and structure of adaptive modulation are proposed. Further, influence of multiplication of Doppler frequency and packet length is analyzed. Iterative modulation scheme is proposed which adjusts modulation scheme according to different multiplication. Simulation results show that in different multiplication region, different mode can get maximum spectrum efficiency and spectrum efficiency decreases with the increase of multiplication.
%K Adaptive modulation
%K Frequency division duplexing
%K Channel prediction
%K Spectrum efficiency<br>自适应调制
%K 频分双工
%K 信道预测
%K 频谱效率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=F6BFB65533F4FE0F&yid=2DD7160C83D0ACED&vid=DB817633AA4F79B9&iid=5D311CA918CA9A03&sid=8BD5F6E1A80D50C6&eid=4CBFE0C7AFFA0387&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=5