Full duplex communication system and method based on reconfigurable holographic metasurface

Abstract

The invention relates to a full duplex communication system and method based on a reconfigurable holographic metasurface, and the system comprises a base station, an uplink user group, a downlink user group, a control module, and a first reconfigurable holographic metasurface and a second reconfigurable holographic metasurface which are connected with the base station. Full-duplex communication between a base station and a user is completed by using the base station, the first reconfigurable holographic metasurface and the second reconfigurable holographic metasurface, an optimization model is constructed through a control module, and the optimization model is optimized by taking the maximum value of the total rate of a full-duplex communication system as a target to obtain optimal variable information. The base station, the first reconfigurable reflecting metasurface and the second reconfigurable transmitting metasurface are controlled according to the optimal variable information, so that self-interference between the first reconfigurable holographic metasurface and the second reconfigurable holographic metasurface is effectively weakened, and the total rate of a communication system is effectively increased.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a full-duplex communication system and method based on a reconfigurable holographic metasurface. Background technique [0002] To realize ubiquitous intelligent information networks, the upcoming sixth generation (6G) wireless communication imposes stringent requirements on antenna technologies, such as capacity enhancement and precise beam steering. While the widely used dish antennas and phased array antennas are both capable of achieving these goals, they both suffer from their own inherent deficiencies that seriously hinder their future development. Specifically, dish antennas require heavy and expensive beam steering machinery, while phased arrays are highly dependent on power amplifiers, consume a lot of power, have complex phase shifting circuits, and have many phase shifters, especially in high frequency bands. Therefore, more cost-effective antenna techno...

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Problems solved by technology

Although the benefits of a full-duplex system can be easily foreseen, the practical implementation of such a full-duplex system poses many challenges and many technical issues still need to be resolved. The key obstacle to the realization of a full-duplex system lies in the The self-interference (Self-interrupt, SI) of the receiving antenna of the receiver, the existence of self-interference will reduce the total rate of the communication system

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