摘要
汽车智能网联是当前交通产业发展的主要方向之一。通过汽车与周围车辆、行人、交通设施、蜂窝网络进行信息交互,提升交通网决策管理智能化水平,改善道路安全与效率。如何定量精确地评估整车通信性能是业界关注的热点问题,然而目前尚缺少成熟的解决方案,特别是面向整车产品。主要研究了基于多探头吸波暗室(multi-probe anechoic chamber,MPAC)的汽车空口测量系统的搭建方法,并针对整车空口测试提出了一种低成本解决方案,可以在信道模拟器数字通路受限的情况下,通过数字变换,成倍拓展测试区域。数字仿真结果表明,基于此方案所构造的测试区域,其空间相关性、时间相关性均满足相关标准要求。
Intelligent traffic system is one of promising technologies for traffic industry.Based on communication among cars,pedestrian,traffic infrastructure and cellular networks,it’s able to significantly promote on road safety and efficiency by making proper traffic instructions.How to precisely evaluate the communication performance of a whole vehicle become a hot-topic in the field.Unfortunately,there is still no solution about the setup and procedures for the OTA testing.A low-cost solution was proposed by reconstructing channel models and optimizing the existing testing system framework that referred to as multi-probe anechoic chamber.The proposed method was able to multiple the test area with limited channel emulator RF channels by introducing a low-cost digital converter.Numerical simulations indicate that the proposed method has the ability to reproduce spatial and temporal correlation features of the target channel model,which is coherent with related standards’requirements.
作者
李雷
魏贵明
姜国凯
冯家煦
吴翔
LI Lei;WEI Guiming;JIANG Guokai;FENG Jiaxu;WU Xiang(China Academy of Information and Communications Technology,Beijing 100191,China;China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300,China)
出处
《电信科学》
2021年第2期32-38,共7页
Telecommunications Science
关键词
汽车空口测试
多探头吸波暗室
空间相关性
时间相关性
OTA testing for vehicles
multi-probe anechoic chamber
spatial correlation
temporal correlation
