%0 Journal Article
%T Adaptive Modulation for MIMO System Based on Limited Feedback<br>基于有限反馈的MIMO系统自适应调制
%A Liu Yi
%A Zhang Hai-lin
%A <br>刘毅
%A 张海林
%J 电子与信息学报
%D 2007
%I 
%X The MIMO channel is changed into the mixture channel using the eigenvector of the channel matrix. The adaptive modulation together with power allocation is studied in order to maximize the system capacity under the constraint of total transmit power and Quality of Service(QoS) . The information needed at the transmitter such as beamforming vector and power allocation vector is conveyed back using limited feedback. The simulation results show that the proposed scheme can improve the capacity greatly at low SNR.
%K Adaptive modulation
%K Limited feedback
%K Power allocation
%K MIMO<br>自适应调制
%K 有限反馈
%K 功率分配
%K 多输入多输出
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=3A3B6EBA50BEC1A2B78DA386EA3DE004&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=708DD6B15D2464E8&sid=869BB026E3BB8A6A&eid=59CA4DC15FDFDB23&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=10