研究方向介绍：全息MIMO（Holographic MIMO）是传统大规模MIMO的下一代形态，其本质是将电磁波辐射与接收面从有限天线拓展为连续的电磁阵面，实现通信信号的三维空间调控。全息MIMO具有极高的空间分辨率和波束塑造能力，特别适用于近场通信、毫米波/太赫兹通信和通信感知一体化等前沿应用。

本人研究内容：在全息MIMO系统建模、波束设计与性能分析方面开展了系统研究。提出了面向近场波束赋形的叠层全息超表面结构，并构建了硬件受限场景下的广义信道模型与能效分析框架。相关工作发表于IEEE TWC、TCOM等期刊，并获得EPSRC项目“Platform Driving the Ultimate Connectivity”海报一等奖，多项研究成果被国际同行广泛引用。

图1：基于层叠结构的全息超表面

期刊论文：

[1]  Qingchao Li, Mohammed El-Hajjar, Yanshi Sun, Lajos Hanzo, “Performance Analysis of Reconfigurable Holographic Surfaces in the Near-Field Scenario of Cell-Free Networks Under Hardware Impairments” [J]. IEEE Transactions on Wireless Communications, 2024, 23(9): 11972-11984.

[2]  Qingchao Li, Mohammed El-Hajjar, Yanshi Sun, Ibrahim Hemadeh, Arman Shojaeifard, Lajos Hanzo, “Energy-Efficient Reconfigurable Holographic Surfaces Operating in the Presence of Realistic Hardware Impairments” [J]. IEEE Transactions on Communications, 2024, 72(8): 5226-5238.

[3]  Qingchao Li, Mohammed El-Hajjar, Chao Xu, Jiancheng An, Chau Yune, Lajos Hanzo, “Stacked Intelligent Metasurfaces for Holographic MIMO Aided Cell-Free Networks” [J]. IEEE Transactions on Communications, 2024.

[4]  Qingchao Li, Mohammed El-Hajjar, Chao Xu, Jiancheng An, Chau Yuen, Lajos Hanzo, “Stacked Intelligent Metasurface-Based Transceiver Design for Near-Field Wideband Systems” [J]. IEEE Transactions on Communications, 2025.