Von Mises分布下椭圆散射信道建模

发布时间：2018-01-10 23:03

本文关键词：Von Mises分布下椭圆散射信道建模　出处：《北京邮电大学学报》2017年02期 　论文类型：期刊论文

【摘要】：为了研究在各向同性散射和非各向同性散射中信道的传输特性,建立一种椭圆散射信道模型,同时在发射端和接收端设置均匀线性阵列以研究多输入多输出系统性能.假设波达信号到达角服从Von Mises分布,在定量给出到达角和发射角关系的条件下分析了参考模型的相关函数和信道容量.另外,在精确多普勒扩展法的基础上提出一种改进的参数计算方法,在参考模型的基础上得到了仿真模型,模型的数值结果阐明了Von Mises分布下信道的相关特性.理论分析和仿真结果表明,信道仿真器和参考模型有近乎一致的时间相关性,同时该模型的提出也拓展了空间统计信道模型的研究.
[Abstract]:In order to study the transmission characteristics of the channel in isotropic and non-isotropic scattering, an elliptical scattering channel model is established. At the same time, uniform linear arrays are arranged at the transmitter and receiver to study the performance of multi-input and multi-output systems. Assume that the arrival angle of arrival signals is distributed from Von Mises. The correlation function and channel capacity of the reference model are analyzed under the condition that the relation between the angle of arrival and the transmission angle is given quantitatively. In addition, an improved parameter calculation method based on the accurate Doppler expansion method is proposed. Based on the reference model, the simulation model is obtained. The numerical results of the model illustrate the correlation characteristics of the channel under the Von Mises distribution. The theoretical analysis and simulation results show that. The time correlation between the channel simulator and the reference model is almost consistent, and the proposed model extends the research of the spatial statistical channel model.
【作者单位】：南京信息工程大学气象探测与信息处理重点实验室;
【基金】：江苏省高校自然科学基金重大项目(14KJA510001) 国家自然科学基金面上项目(61471153) 江苏省信息与通信工程优势学科建设项目
【分类号】：TN919.3
【正文快照】： 建立准确真实的多输入多输出(MIMO,multi-ple-input multiple-output)信道模型对于设计和评估MIMO无线通信系统的性能十分重要,特别是运用MIMO技术的宽带无线通信系统,就需建立适当的信道模型研究其时间、空间及频率相关特性.过去提出的单环模型[1-2]和双环模型[3]主要适用于

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