This paper utilizes a reconfigurable intelligent surface (RIS) to enhance the anti-jamming performance of wireless communications, due to its powerful capability of constructing smart and reconfigurable radio environment. In order to establish the practical interactions between the base station (BS) and the jammer, a Bayesian Stackelberg game is formulated, where the BS is the leader and the jammer acts as the follower. Specifically, with the help of a RIS-assisted transmitter, the BS attempts to reliably convey information to users with maximum utilities, whereas the smart jammer tries to interfere the signal reception of users with desired energy efficiency (EE) threshold. Since the BS and the jammer are not cooperative parties, the practical assumption that neither side can obtain the other's strategies is adopted in the proposed game, and the angular information based imperfect channel state information (CSI) is also considered. After tackling the practical assumption by using Cauchy-Schwarz inequality and the imperfect angular information by using the discretization method, the closed-form solution of both sides can be obtained via the duality optimization theory, which constitutes the unique Stackelberg equilibrium (SE). Numerical results demonstrate the superiority and validity of our proposed robust schemes over the existing approaches.

中文翻译：

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具有二进制卸载的智能反射表面辅助移动边缘计算：物联网设备的能源最小化


本文利用可重构智能表面(RIS)来增强无线通信的抗干扰性能，因为它具有构建智能和可重构无线电环境的强大能力。为了建立基站（BS）和干扰器之间的实际交互，制定了贝叶斯斯塔克尔伯格博弈，其中BS是领导者，干扰器是跟随者。具体来说，在 RIS 辅助发射机的帮助下，BS 尝试以最大效用向用户可靠地传达信息，而智能干扰器则尝试以所需的能效 (EE) 阈值干扰用户的信号接收。由于BS和干扰机不是合作方，因此在所提出的博弈中采用双方都无法获得对方策略的实际假设，并且还考虑了基于角度信息的不完美信道状态信息（CSI）。利用柯西-施瓦茨不等式和离散化的不完美角度信息解决实际假设后，通过对偶优化理论可以得到两边的闭式解，构成唯一的Stackelberg平衡（SE）。数值结果证明了我们提出的鲁棒方案相对于现有方法的优越性和有效性。