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1. 中国信息通信研究院,北京 100191
2. 中国汽车技术研究中心有限公司,天津 300300
[ "李雷(1990- ),男,中国信息通信研究院工程师,主要研究方向为无线通信原理与系统、无线信道建模与分析、MIMO OTA性能测试技术、车联网性能测试方法等。" ]
[ "魏贵明(1970- ),男,中国信息通信研究院移动通信创新中心常务副主任,主要研究方向为移动通信技术标准、产业组织和发展策略等。" ]
[ "姜国凯(1990- ),男,中国汽车技术研究中心有限公司高级工程师,主要研究方向为智能网联汽车电磁兼容和通信质量测评。" ]
[ "冯家煦(1994- ),男,中国汽车技术研究中心有限公司工程师,主要研究方向为智能网联汽车通信质量测试评价。" ]
[ "吴翔(1979- ),男,中国信息通信研究院高级工程师,主要研究方向为无线通信、射频、电磁兼容等。" ]
网络出版日期:2021-02,
纸质出版日期:2021-02-20
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李雷, 魏贵明, 姜国凯, 等. 面向汽车的MIMO OTA测试技术[J]. 电信科学, 2021,37(2):32-38.
Lei LI, Guiming WEI, Guokai JIANG, et al. MIMO OTA performance testing of vehicles[J]. Telecommunications science, 2021, 37(2): 32-38.
李雷, 魏贵明, 姜国凯, 等. 面向汽车的MIMO OTA测试技术[J]. 电信科学, 2021,37(2):32-38. DOI: 10.11959/j.issn.1000-0801.2021040.
Lei LI, Guiming WEI, Guokai JIANG, et al. MIMO OTA performance testing of vehicles[J]. Telecommunications science, 2021, 37(2): 32-38. DOI: 10.11959/j.issn.1000-0801.2021040.
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.
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3GPP . Verification of radiated multi-antenna reception performance of User Equipment (UE):TR37.977,V15.0.0 [S ] . 2018 .
CTIA . Test plan for 2x2 downlink MIMO and transmit diversity over-the-air performance:Version 1.2 [S ] . 2018 .
PEKKA K , TOMMI J , NUUTINEN J P . Channel modelling for multiprobe over-the-air MIMO testing [J ] . International Journal of Antennas and Propagation , 2012 ( 10 ): 1 - 11 .
林琳 , 李璐 , 葛雨明 . 车联网通信标准化与产业发展分析 [J ] . 电信科学 , 2020 , 36 ( 4 ): 15 - 26 .
LIN L , LI L , GE Y M . Analysis of the communication standardization and industry development of internet of vehicles [J ] . Telecommunications Science , 2020 , 36 ( 4 ): 15 - 26 .
TOMMI L , PEKKA K , NUUTINEN J P , et al . On the number of OTA antenna elements for planewave synthesis in a MIMO-OTA test system involving a circular antenna array [C ] // Proceedings of the Fourth European Conference on Antennas and Propagation .[S.l.:s.n. ] , 2010 .
FAN W , XAVIER C , SUN F , et al . Emulating spatial characteristics of MIMO channels for OTA testing [J ] . IEEE Transactions on Antennas and Propagation , 2013 , 61 ( 8 ): 4306 - 4314 .
工业和信息化部 . 车联网(智能网联汽车)直连通信使用5 905~5 925 MHz频段的管理规定(征求意见稿) [R ] . 2007 - 06 - 27 .
MIIT . Regulation on the use of 5 905~5 925 MHz band for direct communication in the internet of vehicles (intelligent connected vehicle) (draft for comments) [R ] . 2007 - 06 - 27 .
WEI F , PEKKA K , NIELSEN J , et al . Wideband MIMO channel capacity analysis in multiprobe anechoic chamber setups [J ] . IEEE Transactions on Vehicular Technology , 2016 , 65 ( 5 ): 2861 - 2871 .
BAUM D S , HANSEN J , SALO J . An interim channel model for beyond-3G systems:extending the 3GPP spatial channel model (SCM) [C ] // Proceedings of Vehicular Technology Conference .[S.l.:s.n. ] , 2005 .
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