摘要
分析了超宽带室内信号的传播规律,即多径分量成簇到达.在实测数据的基础上,研究了信道模型参数的一般规律:簇的到达率Λ应该远小于径的到达率λ,簇的衰减系数Γ应该大于径的衰减系数γ,并修正了IEEE802.15.3a信道模型CM2环境下的模型参数.仿真结果表明:修正参数后的CM2信道模型优于原模型,更能体现出多径分量成簇到达特性,与实测数据相比较,能更好地拟合实测数据.
The propagation characteristics of Ultra-WideBand （UWB） indoor signals are analyzed, and multi-path components are found to arrive in clusters. The general rule of channel model parameters is studied on the basis of measurement data. Results show that the arrival rate of cluster is far less than that of the diameter, while the attenua- tion coefficient of cluster is greater than that of the diameter. The parameters of IEEE 802. 15.3a channel model are modified in the CM2 environment. Simulation results show that the modified CM2 channel model is superior to the o- riginal model, which can better reflect the clustering characteristics of multi-path component arrival. The fitting re- sult indicates a good agreement between measurement data and the modified model.
出处
《南京信息工程大学学报（自然科学版）》
CAS
2013年第1期64-68,共5页
Journal of Nanjing University of Information Science & Technology（Natural Science Edition）
关键词
传播特性
信道测量
模型参数
信道模型
propagation properties
channel measurement
model parameters
channel model
