1. You X H, Wang C X, Huang J, et al. Towards 6G wireless communication networks: vision, enabling technologies, and new paradigm shifts. Sci China Inf Sci, 2021, 64: 110301
2. Yuan Y F, Zhao Y J, Zong B Q, et al. Potential key technologies for 6G mobile communications. Sci China Inf Sci, 2020, 63: 183301
3. He R, Ai B, Wang G, et al. Wireless channel sparsity: measurement, analysis, and exploitation in estimation. IEEE Wirel Commun, 2021. doi: https://doi.org/10.1109/MWC.001.2000378
4. 3GPP. User equipment (UE)/mobile station (MS) over the air (OTA) antenna performance; conformance testing (release 9). 3GPP TS 34.114, 2009. http://www.arib.or.jp/english/html/overview/doc/STD-T63v9_20/2_T63/ARIB-STD-T63/Rel9/34/A34114-920.pdf
5. CTIA Certifification. Test plan for mobile station over the air performance. Method of measurement for radiated RF power and receiver performance. Revision Number 2.2.2, 2008. https://api.ctia.org/docs/default-source/default-document-library/ctia-test-plan-for-mobile-station-over-the-air-performance-revision-3-1.pdf