6G Technologies - Opportunities and Challenges

The key drivers of 6G mainly result from the technology-driven paradigm shift. As a novel paradigm, interference exploitation will be used to design the energy-efficient and high-precision communication systems. The most potential interference exploitation is computational holographic radio technology. As one of the most promising 6G physical layer technologies, holographic radio creates an opportunity of converging RF holography, integrated photonics, optical computing and photonic AI. Although holographic radio largely improves spectral efficiency and network capacity, and promotes the integration of imaging, sensing and wireless communication, how to realize it is a great challenge.