基于对偶格基缩减的MIMO检测算法  

MIMO Detection Algorithm Based on Dual Lattice Basis Reduction

作　　者：郭明喜[1] 沈越泓[1] 

机构地区：[1]解放军理工大学通信工程学院,南京210007

出　　处：《数据采集与处理》2010年第6期696-701,共6页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金(60772083)资助项目

摘　　要：研究了基于复数对偶格基缩减的MIMO系统检测算法,基于正交性亏损以及复数LLL格基缩减的特性,用一种新方法证明了采用对偶格基缩减线性检测的V-BLAST系统可以获得最大接收分集,其分集阶数等于接收天线数。为了解释对偶格基缩减检测性能优于原始格基缩减检测,本文定义了正确判决区域的核,提出了以归一化核半径为度量的分析方法,并给出了其计算式。仿真结果很好地印证了该方法的合理性和有效性。MIMO detection algorithm based on complex dual lattice basis reduction（DLBR） is discussed.The diversity order for V-BLAST system is derived with a new approach based on the orthogonality deficiency and the property of complex LLL LBR algorithm.The result shows that the detection based on DLBR can achieve the maximum receive diversity and it is equal to the number of the receive antennas.To explain why the detection performance based on DLBR is better than that based on primal LBR,the core of the correct decision region is defined.An analysis method based on the normalized core radius is proposed and the expressions are also provided.Simulation results show that the method is reasonable and effective.

关 键 词：MIMO检测 对偶格基缩减 接收分集 核半径 

分 类 号：TN911.23[电子电信—通信与信息系统]