排序判决反馈辅助格约减MIMO信号检测方法  

An Ordered Decision Feedback Aided Method for Lattice Reduction MIMO Detection

作　　者：易志强[1] 李芸[1] 曾嵘[1] 姚英彪[1] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2014年第3期17-20,共4页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：浙江省教育厅科研资助项目(Y200908106)

摘　　要：格约减辅助的MIMO信号检测依赖于合适的符号判决方法。本文提出了一种基于排序判决反馈的格约减信号检测方案。为提高判决准确度,将格约减检测输出按照量化误差降序排列,并利用判决反馈机制加强对变换星座空间边界的控制。仿真结果表明,该方案能以多项式级的运算复杂度实现接近最优检测算法的性能。Signal detection in lattice reduction aided multiple-input multiple-output（ MIMO） systems depends upon appropriate symbol decision scheme in the reduced lattice. In this paper,an ordered decision feedback aided detection scheme based on lattice reduction is proposed. In order to improve the decision accuracy,the LR detection results are descending sorted according to the value of quantization error and exploit decision feedback to enhance the transformed constellation boundaries. Simulations show that the scheme can approach the optimum detection performance in polynomial computational complexity.

关 键 词：多输入多输出 格约减 信号检测 判决反馈 

分 类 号：TN911[电子电信—通信与信息系统]