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Non-Orthogonal Multiple Access in Two-Hop Wireless Powered Communication Networks
IEEE Wireless Communications Letters ( IF 6.3 ) Pub Date : 2020-09-01 , DOI: 10.1109/lwc.2020.2992049 J. A. de Carvalho , D. B. da Costa , F. Rafael M. Lima , R. Oliveira , U. S. Dias
IEEE Wireless Communications Letters ( IF 6.3 ) Pub Date : 2020-09-01 , DOI: 10.1109/lwc.2020.2992049 J. A. de Carvalho , D. B. da Costa , F. Rafael M. Lima , R. Oliveira , U. S. Dias
This letter studies the resource allocation problem of sum rate maximization in wireless powered communication networks (WPCNs) with non-orthogonal multiple access (NOMA) that satisfy minimum data rate requirements per user. Firstly, we derive closed-form solutions for the time-splitting ratio and power allocation coefficients that maximize the approximated sum rate NOMA expression. Then, we use the solution of the approximated problem as the starting point for solving the original problem through Newton’s method. Simulation results show the effectiveness of the proposed approximation as well as the fast convergence of the optimal solution.
中文翻译:
两跳无线供电通信网络中的非正交多址
这封信研究了具有非正交多址 (NOMA) 的无线供电通信网络 (WPCN) 中总速率最大化的资源分配问题,该网络满足每个用户的最低数据速率要求。首先,我们推导出时间分割比和功率分配系数的封闭形式解,使近似总和率 NOMA 表达式最大化。然后,我们以近似问题的解作为出发点,通过牛顿法求解原问题。仿真结果表明了所提出的近似的有效性以及最优解的快速收敛。
更新日期:2020-09-01
中文翻译:
两跳无线供电通信网络中的非正交多址
这封信研究了具有非正交多址 (NOMA) 的无线供电通信网络 (WPCN) 中总速率最大化的资源分配问题,该网络满足每个用户的最低数据速率要求。首先,我们推导出时间分割比和功率分配系数的封闭形式解,使近似总和率 NOMA 表达式最大化。然后,我们以近似问题的解作为出发点,通过牛顿法求解原问题。仿真结果表明了所提出的近似的有效性以及最优解的快速收敛。