MIMO/SA多天线空时信道建模  

MIMO/SA Multi-antenna Space-time Channel Modeling

作　　者：吕郡陵[1,2] 郭爱煌[1,2] 

机构地区：[1]同济大学电子与信息工程学院,上海201804 [2]毫米波国家重点实验室,南京210096

出　　处：《计算机工程》2012年第3期100-103,115,共5页Computer Engineering

基　　金：毫米波国家重点实验室开放课题基金资助项目(K201009)

摘　　要：运用相关矩阵法,通过计算2根天线之间的相关系数、多输入多输出(MIMO)的相关矩阵,得到MIMO信道系数矩阵,在其中加入智能天线(SA)的导向向量和赋形向量,得到MIMO/SA矩阵,由此实现对MIMO/SA多天线空时信道的建模。利用Matlab搭建一个仿真平台,从空间、时间、频率3个方面分析MIMO/SA多天线信道模型,结果表明,该模型具有较好的信道方向性增益,信道的空时频特性符合3GPP 25.996的要求,可用于MIMO/SA多天线的设计、优化和信道容量分析。Based on correlation matrix method, Multiple-input and Multiple-output（MIMO） channel coefficient matrix can be obtained by calculating the correlation coefficient between two antennas and MIMO correlation matrix. The steering vector and beam-forming vector of Smart Antenna（SA） are added to the MIMO channel coefficient matrix to form MIMO/SA channel matrix, so that MIMO/SA multi-antenna space-time channel is modeled. A channel simulation platform is established to simulate and analyze MIMO/SA channel in time domain, frequency domain and space domain. Simulation results show that the model has a good channel directivity gain and the channel properties in space, time and frequency meet the demands of 3GPP TR 25.996, and it is useful for designing and optimizing MIMO/SA multi-antenna system and the analysis of channel capacity.

关 键 词：多输入多输出 智能天线 空时信道建模 相关矩阵法 功率时延分布 角度功率谱 

分 类 号：TN911.7[电子电信—通信与信息系统]