论文标题
全双工通信系统中可重新配置的智能表面以提高能源效率
Reconfigurable Intelligent Surfaces for Energy Efficiency in Full-duplex Communication System
论文作者
论文摘要
在这封信中，我们研究了可重构的智能表面（RIS）辅助全双工（FD）通信系统。通过共同设计两个多ANTENNA源的主动波束形成和RIS的被动横梁，我们旨在最大程度地提高系统的能源效率，在此，还考虑了FD系统中额外的自我干扰取消功耗。我们将优化问题划分为主动和被动的波束形成设计子问题，并采用替代优化框架来迭代解决它们。 Dinkelbach的方法用于解决主动波束成型问题中的分数目标函数。利用惩罚方法和连续的凸近近似值用于被动波束形成设计。仿真结果表明，我们计划的能源效率优于其他基准。
In this letter, we study the reconfigurable intelligent surfaces (RIS) aided full-duplex (FD) communication system. By jointly designing the active beamforming of two multi-antenna sources and passive beamforming of RIS, we aim to maximize the energy efficiency of the system, where extra self-interference cancellation power consumption in FD system is also considered. We divide the optimization problem into active and passive beamforming design subproblems, and adopt the alternative optimization framework to solve them iteratively. Dinkelbach's method is used to tackle the fractional objective function in active beamforming problem. Penalty method and successive convex approximation are exploited for passive beamforming design. Simulation results show the energy efficiency of our scheme outperforms other benchmarks.
