论文标题
RIS辅助合作Noma with swipt
RIS-Assisted Cooperative NOMA with SWIPT
论文作者
论文摘要
本文研究了具有同时无线信息和功率传输（SWIPT）的可重构智能表面（RIS）在合作非正交多访问（C-NOMA）网络中的应用。我们的目标是通过共同优化功率分配因子，波束形成系数和RIS反射系数在两个传输阶段中，通过确保弱用户的服务质量（QO）来最大化强大的用户速率。由于其复杂和非凸约限制，该法式问题很难解决。为了解决这个具有挑战性的问题，我们首先使用交替优化（AO）框架将其转换为三个子问题，然后使用基于惩罚的算术算术平均值近似（PBAGM）算法和连续的convex近似值（SCA） - 基于基于罚款的算法（PBAGM）算法来解决它们。数值结果验证了所提出的算法在基线方案上的优越性。
This paper studies the application of reconfigurable intelligent surface (RIS) to cooperative non-orthogonal multiple access (C-NOMA) networks with simultaneous wireless information and power transfer (SWIPT). We aim for maximizing the rate of the strong user with guaranteed weak user's quality of service (QoS) by jointly optimizing power splitting factors, beamforming coefficients, and RIS reflection coefficients in two transmission phases. The formulated problem is difficult to solve due to its complex and non-convex constraints. To tackle this challenging problem, we first use alternating optimization (AO) framework to transform it into three subproblems, and then use the penalty-based arithmetic-geometric mean approximation (PBAGM) algorithm and the successive convex approximation (SCA)-based method to solve them. Numerical results verify the superiority of the proposed algorithm over the baseline schemes.
