煤矿井下MIMO系统建模与信道容量分析  

Analysis of MIMO channel capacity and modeling of MIMO system for underground coal mine

作　　者：张晓光[1] 李蕾蕾[1] 郑红党[1] 王子剑[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《西安科技大学学报》2011年第3期366-370,共5页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金资助项目(No.60972059);江苏省2010年度普通高校研究生科研创新计划项目(CX10B_154Z);中国矿业大学青年科研基金(No.0C090202)

摘　　要：针对矿井巷道,给出了一种M IMO相关性信道的建模方法。该方法利用电磁波在巷道内传播的冲击响应,得到单输入单输出系统的频率响应,从而扩展得到多输入多输出频率响应矩阵;结合相关函数的定义,计算出相关系数;构建出M IMO系统多天线之间的空间相关矩阵;生成M IMO信道的相关矩阵。通过MATLAB仿真,将相关信道和瑞利信道的容量累计概率分布对比,证明了相关性的存在降低了信道的容量,增加天线数目和间距可以降低相关系数,增加信道容量。According to mine tunnel,a new modeling method of MIMO correlated channel was introduced.In this method,by shock response of electromagnetic wave spreaded in the roadway,got the frequency response of single-input single-output system and the frequency response matrix of multiple-input multiple-output system;with the definition of correlation function,correlation coefficient was calculated;constructed the spatially correlation matrix between the multi-antenna of MIMO system;the MIMO correlated was generated.Through the MATLAB simulation,comparing the capacity of the cumulative probability distribution of contrast between related channel and Rayleigh channel,it was proved that correlation reduces the capacity of the channel,increasing the number of antenna and spacing of the antenna can make correlation coefficient reduced and increase the channel capacity.

关 键 词：矿井巷道 MIMO信道建模 相关系数 信道容量 

分 类 号：TD655[矿业工程—矿山机电] TN929.5[电子电信—通信与信息系统]