%0 Journal Article
%T Dynamic Resource Allocation for Downlink Multiuser MIMO-OFDMA/SDMA Systems<br>下行多用户MIMO-OFDMA/SDMA系统动态资源分配
%A Zhong Chong-xian
%A Yang Lu-xi
%A <br>仲崇显
%A 杨绿溪
%J 电子与信息学报
%D 2008
%I 
%X Dynamic resource allocation algorithms are investigated for downlink multiuser Multiple Input Multiple Output Orthogonal Frequency Division Multiple Access and Space Division Multiple Access (MIMO-OFDMA/SDMA) systems. Firstly, a mathematical formulation is provided with the goal of maximizing throughput under various constraints. Secondly, since the optimal solution is difficult to obtain, the optimization procedure is divided into two steps. In the first step, a metric is derived to measure the spatial compatibility of users with multiple antennas, and then a scheduling algorithm is developed based on the proposed metric. In the second step, two suboptimal algorithms are developed to assign resources for the scheduled users. Simulation results demonstrate that proposed algorithms outperform random scheduling scheme. When combined with power reuse strategy, proposed algorithms obtain performances close to the optimal scheme based on user selection.
%K MIMO
%K OFDMA
%K SDMA
%K Dynamic Resource Allocation (DRA)
%K Downlink multiuser system<br>多输入多输出
%K 正交频分多址
%K 空分多址
%K 动态资源分配
%K 下行多用户系统
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=400EFE18FF892C85F2381780D466D138&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=59906B3B2830C2C5&sid=82A6F761157FD405&eid=9BD755C04A34257D&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=7