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Key issues and algorithms of multiple-input-multiple-output over-the-air testing in the multi-probe anechoic chamber setup

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Abstract

Multiple-input-multiple-output (MIMO) over-the-air (OTA) testing plays a key role in the research and development of wireless devices. MIMO OTA testing is necessary for the fifth generation (5G) wireless products, in which conventional radio frequency ports may be inaccessible. The performances of the test device can be evaluated in a repeatable and reliable way under laboratory conditions in OTA tests, which might not be feasible in conducted tests. Many efforts have been devoted to OTA test research and some achievements have been made. This paper mainly summarizes the channel emulation algorithms for two-dimensional user equipment and three-dimensional base station OTA testing in the anechoic chamber setup. In addition, the requirements of the test system design are also discussed in this paper, including the selection of the number of OTA probes, the size of the test zone, the physical dimension of the setup, and the flexible probe selection algorithm of the three-dimensional base station OTA setup. In addition, some novel test methods for 5G radio devices are also discussed.

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Acknowledgements

This work was supported in part by National Key Research and Development Program of China (Grant No. 2020YFA0709800), National Natural Science Foundation of China (Grant Nos. 62171362, 61801366, 81701774, 61771423), Natural Science Foundation of Shaanxi Province (Grant No. 2020JM-078), National Key Research and Development Program of China (Grant No. 2018YFA0701400), Zhejiang Lab (Grant No. 2018EB0ZX01), Key-Area Research and Development Program of Guangdong Province (Grant No. 2018B030333001), and Fundamental Research Funds for the Central Universities (Grant No. 2019XZZX003-20).

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  1. School of Information and Communications Engineering, Xi’an Jiaotong University, Xi’an, 710049, China

    Huiling Pei, Xiaoming Chen, Xiaoyu Huang & Xiaobo Liu

  2. College of Electrical Engineering, Zhejiang University, Hangzhou, 310000, China

    Xiaotong Zhang

  3. Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University, Hangzhou, 310000, China

    Xiaotong Zhang

  4. Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, L69 3GJ, UK

    Yi Huang

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  1. Huiling Pei
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Correspondence to Xiaoming Chen.

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Pei, H., Chen, X., Huang, X. et al. Key issues and algorithms of multiple-input-multiple-output over-the-air testing in the multi-probe anechoic chamber setup. Sci. China Inf. Sci. 65, 131302 (2022). https://doi.org/10.1007/s11432-021-3285-y

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