电信科学 ›› 2021, Vol. 37 ›› Issue (2): 32-38.doi: 10.11959/j.issn.1000-0801.2021040

• 专题:移动通信(5G)测试 • 上一篇    下一篇

面向汽车的MIMO OTA测试技术

李雷1, 魏贵明1, 姜国凯2, 冯家煦2, 吴翔1   

  1. 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
  • 修回日期:2021-02-18 出版日期:2021-02-20 发布日期:2021-02-01
  • 作者简介: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。

MIMO OTA performance testing of vehicles

Lei LI1, Guiming WEI1, Guokai JIANG2, Jiaxu FENG2, Xiang WU1   

  1. 1 China Academy of Information and Communications Technology, Beijing 100191, China
    2 China Automotive Technology and Research Center Co., Ltd., Tianjin 300300, China
  • Revised:2021-02-18 Online:2021-02-20 Published:2021-02-01

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。

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

Abstract:

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.

Key words: OTA testing for vehicles, multi-probe anechoic chamber, spatial correlation, temporal correlation

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