摘要
毫米波信道建模是第五代(the 5th Generation,5G)移动通信系统的关键技术,而路径损耗是表征毫米波信道传播大尺度衰落影响的重要参数.为了更好地理解毫米波信道的传播特性,应进行广泛的信道测量与建模.因此,对28GHz室内环境进行了信道测量,并给出了相应的毫米波信道路径损耗模型,同时基于入射及反弹射线法/镜像法仿真分析了路径损耗传播特性.研究结果表明:实测结果与仿真结果一致性吻合良好,从而验证了入射及反弹射线法/镜像法的正确性;自由空间邻近(Close-In,CI)参考距离路径损耗模型表达式更简洁,鲁棒性更强.最后,本文给出了一种普遍适用的用来表征室内视距(Line-of-Sight,LOS)与非视距(Non-Line-of-Sight,NLOS)环境28GHz与60GHz毫米波信道的路径损耗模型.
The millimeter-wave （mm Wave） channel modeling will be one of the key technologies for the 5th generation （5G） mobile communication systems, and the path loss is a significant parameter which can be applicated to characterize the large scale fading of the mm Wave channel propagation. To have a better understanding the propagation characteristics of mm Wave channel, extensive channel measurements and modeling should be conducted. Thus, in this paper, the measurements of mm Wave channel are carried out in indoor environment at 28 GHz, and the corresponding path loss models of mm Wave channel are also given. At the same time, the propagation characteristics of path loss are analyzed based on the method of shooting-and-bouncing-ray／image （SBR／Image）. The results show that： a good agreement is achieved between the measured results and the simulated results, so the correctness of SBR／Image method is validated; the path loss model of the close-in （CI） free space reference distance provides more accuracy and stability in indoor scenarios.Finally,a universally applicable path loss model for 28 GHz and 60 GHz mm Wave channels in indoor LOS and NLOS environment is given.
出处
《电波科学学报》
CSCD
北大核心
2017年第5期602-611,共10页
Chinese Journal of Radio Science
基金
国家自然科学基金(No.61372045)
电波环境特性及模化技术重点实验室项目(No.201600013)
江苏省研究生创新计划项目(No.KYLX16_0650)
