%0 Journal Article
%T Soft Semi-definite Relaxation for Detection of 16-QAM Signaling in MIMO Systems<br>MIMO系统中16-QAM信号的软值输出半正定松弛检测
%A Xu Xin
%A Cai Yue-ming
%A Xu You-yun
%A <br>徐信
%A 蔡跃明
%A 徐友云
%J 电子与信息学报
%D 2008
%I 
%X In this paper, soft semi-definite relaxation for detection of 16-QAM signaling in MIMO systems is investigated. Additional constraints and dimension-reduction approximation method are proposed, which can be used to calculate the Log-Likelihood Ratio (LLR) and reduce dimensions of the SDR detection, respectively. Simulations show that the soft SDR detector exhibits a better performance in a flat-fading MIMO channels, and the complexity of the soft detector is considerably reduced by reducing the dimensions of the SDR programming, but the performance loss leads by dimension reduction is about 0.2 to 0.4 dB.
%K Multiple-Input Multiple-Output(MIMO)
%K Semi-definite relaxation
%K Soft-in soft-out
%K Detection<br>多输入多输出
%K 半正定松弛
%K 软输入软输出
%K 检测
%K MIMO
%K Systems
%K 系统
%K 信号
%K 软输出
%K 半正定
%K 松弛检测
%K Signaling
%K Detection
%K Relaxation
%K 性能损失
%K 运算复杂度
%K 检测性能
%K 附加约束条件
%K 仿真结果
%K 近似处理
%K 处理方法
%K 降维
%K 计算
%K 检测器
%K 检测问题
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=5D782DE634805E49578875C6E870195A&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=DF92D298D3FF1E6E&sid=1CF15D8E59774A81&eid=ED2274D65CDCCA90&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=8