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A Novel 3D Non-Stationary GBSM for 6G THz Ultra-Massive MIMO Wireless Systems


Aug 14, 2021
Jun Wang, Cheng-Xiang Wang, Jie Huang, Haiming Wang, Xiqi Gao, Xiaohu You, Yang Hao


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LEO Satellite Constellations for 5G and Beyond: How Will They Reshape Vertical Domains?


Jun 18, 2021
Shicong Liu, Zhen Gao, Yongpeng Wu, Derrick Wing Kwan Ng, Xiqi Gao, Kai-Kit Wong, Symeon Chatzinotas, Bjorn Ottersten

* 4 figures, 1 table, accepted by Communications Magazine 

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Dynamic Metasurface Antennas for Energy Efficient Massive MIMO Uplink Communications


Jun 17, 2021
Li You, Jie Xu, George C. Alexandropoulos, Jue Wang, Wenjin Wang, Xiqi Gao


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Energy-Efficient Precoding in Electromagnetic Exposure-Constrained Uplink Multiuser MIMO


May 31, 2021
Jiayuan Xiong, Li You, Derrick Wing Kwan Ng, Wenjin Wang, Xiqi Gao

* We investigate the SAR-aware uplink precoder design for the EE maximization in multiuser MIMO transmission exploiting statistical CSI 

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Energy Efficiency Optimization for Multi-cell Massive MIMO: Centralized and Distributed Power Allocation Algorithms


May 31, 2021
Li You, Yufei Huang, Di Zhang, Zheng Chang, Wenjin Wang, Xiqi Gao

* to appear in IEEE Transactions on Communications 

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A General 3D Space-Time-Frequency Non-Stationary THz Channel Model for 6G Ultra-Massive MIMO Wireless Communication Systems


Apr 20, 2021
Jun Wang, Cheng-Xiang Wang, Jie Huang, Haiming Wang, Xiqi Gao


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A General 3D Non-Stationary Wireless Channel Model for 5G and Beyond


Jan 17, 2021
Ji Bian, Cheng-Xiang Wang, Xiqi Gao, Xiaohu You, Minggao Zhang


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Learning to Localize: A 3D CNN Approach to User Positioning in Massive MIMO-OFDM Systems


Nov 14, 2019
Chi Wu, Xinping Yi, Wenjin Wang, Li You, Qing Huang, Xiqi Gao


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