宽带车辆到车辆MIMO通信系统性能研究  

Performance of wideband V2V MIMO communication systems

作　　者：李亦天[1] 梁晓林 张蕊[3] 李博晗 赵雄文[1,3] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]河北大学电子信息工程学院,保定071002 [3]中国电波传播研究所电波环境特性及模化技术重点实验室,青岛266107 [4]北京邮电大学信息与通信工程学院,北京100876

出　　处：《电波科学学报》2017年第5期561-569,共9页Chinese Journal of Radio Science

基　　金：电波环境特性及模化技术重点实验室专项资金开放课题(201400009);移动通信国家重点实验室开放课题(2016D09);国家自然科学基金(No.61372051)

摘　　要：基于二维(Two-Dimensional,2D)双环和三维(Three-Dimensional,3D)双圆柱体散射模型,在视距(Line-of-Sight,LOS)和非视距(Non-Line-of-Sight,NLOS)场景下,利用宽带2D和3D几何散射模型开展信道仿真,基于实现的MIMO信道矩阵,结合空-频区块编码(Space-Frequency Block Coding,SFBC)和正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术,研究了收发终端的移动速度、天线阵元间隔等对宽带车辆到车辆(Vehicle-to-Vehicle,V2V)多输入多输出(Multiple-Input Multiple-Output,MIMO)通信系统误码率(Bit Error Rate,BER)和信道容量的影响.结果表明:随着收发终端移动速度增大,信号衰减加快,宽带MIMO V2V通信系统的BER增大;随着收发端天线阵元间隔的增大,MIMO信道的相关性减小,通信系统的BER减小,MIMO信道的信道容量增大.文中研究方法和结论将对V2V MIMO系统性能分析有一定的指导意义.In this paper, based on a two-dimensional （2D） two-ring and a three-dimensional （3D） two-cylinder scattering channel models together with advanced space-frequency block coding （SFBC） and orthogonal frequency division multiplexing （OFDM） technologies under the line-of-sight （LOS） and non-line-of-sight （NLOS） conditions, system performances are analyzed for vehicle-to-vehicle （V2V） multiple-input multiple-output （MIMO）, such as the bit-error-rate （BER） and channel capacity with respect to the moving speed and their antenna element spacing of the transceiver.The research method and results are useful for V2V MIMO system performance studies. The results show that with the acceleration of the moving speed of the transceiver terminal, the signal attenuation is accelerated and BER of broadband MIMO V2V communication system increases; while with the increase of the interval of antenna array transceiver, the BER of communication system decreases, and the capacity of MIMO channel increases.

关 键 词：几何信道模型 车辆到车辆 视距 非视距 空时相关函数 BER 

分 类 号：TN929.5[电子电信—通信与信息系统]