摘要
针对室内多径信道的特点,提出了一种可对室内多径信道进行三维宽带多极化测量的方法,并设计制作了三维宽带多极化测量系统,利用该系统对典型室内环境的多径信道进行了测量。测量系统的发射端和接收端天线阵列各由一组虚拟的多极化天线阵列构成,多径信道的频域响应由矢量网络分析仪测量得到。利用此系统对典型室内环境中多径信道进行的三维多极化测量结果表明,不同极化方式的电磁波在相同多径环境中的传播特性有明显差异。在不同的测量位置,包括直射和非直射的多径条件下,不同极化的多径信道之间相关系数都很低,证明可以利用不同极化方式多径信道的不相关在室内环境中构建极化分集的MIMO系统。
To study the characteristics of the indoor multi-path channel,a method focused on the three-dimensional multi-polarized wideband MIMO channel measurement for indoor multi-path channel is presented,The system were designed and equipped,and the measurement experiments were carried to demonstrate the validity of the method and study the characteristics of the indoor multi-path channel.Virtual antenna arrays were used in the transmitter and receiver of the system respectively.A vector network analyzer was used to measure the frequency response of the channel.The propagation characteristics of different polarized channels were measured in a typical indoor environment using this system,and the results show that the propagation characteristics of different polarized signals in the same environment are greatly different.It is indicated that the correlations of multi-path channel employed different polarization are low,and the polarization MIMO system is practicable and valuable in indoor environment for the differences of the channels with different polarization.
出处
《电子测量与仪器学报》
CSCD
2010年第8期737-742,共6页
Journal of Electronic Measurement and Instrumentation
基金
国家重点基础研究发展规划项目(编号:2009CB320205)
国家科技重大专项课题(编号:2009ZX03007-003)
国家863计划项目资助课题(编号:2009AA011503)
国家自然科学基金(编号:60771009)
清华大学传信基金
关键词
信道测量
室内多径信道
多入多出技术
极化分集
多极化
channel measurement
indoor multi-path channel
MIMO（multiple-input–multiple-output）
polarization diversity
multi-polarization
