%0 Journal Article
%T Minimizing Power Scheme with Low Feedback Overhead for Multiuser MIMO-OFDM Systems<br>一种低反馈开销多用户MIMO-OFDM系统功率最小化方案
%A Xu Lei
%A Xu Da-zhuan
%A Zhang Xiao-fei
%A <br>徐 雷
%A 徐大专
%A 张小飞
%J 电子与信息学报
%D 2010
%I 
%X This paper utilizes the Karush-Kuhn-Tucher condition of convex programming issue and proposes a minimizing power scheme with low feedback overhead for multiuser MIMO-OFDM systems based on trellis coded modulation. Firstly, the scheme designs the codebook of rate and power and equivalent channel quantization threshold. Secondly, the subcarrier is allocated according to current channel state information and the equivalent channel gain is quantized. Finally, the base station broadcasts the result of resource allocation to users. The simulation results prove that comparing to other schemes the proposed scheme not only saves efficiently energy but also has advantage of low feedback overhead.
%K MIMO-OFDM
%K Low feedback overhead
%K Karush-Kuhn-Tucher condition
%K Real-time service<br>MIMO-OFDM
%K 低反馈开销
%K 库恩-塔克条件
%K 实时业务
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=6262047B5244D481B715BB2F08765B8E&yid=140ECF96957D60B2&vid=9971A5E270697F23&iid=DF92D298D3FF1E6E&sid=C3BE0738C75042AD&eid=784CFDF6185AED9D&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=11