论文标题
上行链路和下行链路之间的性能权衡
Performance Trade-off Between Uplink and Downlink in Full-Duplex Communications
论文作者
论文摘要
在本文中，我们在正交频段多访问（OFDMA）中提出了两个多目标优化问题（MOOP），基于波段（OFDMA）的内二线（IBFD）无线通信。将系统汇总的功耗降至最低为上行链路和下行之间的第二个MOOP，同时考虑到自我干扰〜（SI）〜（SI）〜和服务提供质量的影响。为了规避这一难度，引入了惩罚功能将问题重新将数学上的可拖动形式重新制定。仿真结果表明，在考虑的竞争目标之间进行了一个有趣的权衡。
In this paper, we formulate two multi-objective optimization problems (MOOPs) in orthogonal frequency-division multiple access (OFDMA)-based in-band full-duplex (IBFD) wireless communications.~The aim of this study is to exploit the performance trade-off between uplink and downlink where a wireless radio simultaneously transmits and receives in the same frequency.~We consider maximizing the system throughput as the first MOOP and minimizing the system aggregate power consumption as the second MOOP between uplink and downlink,~while taking into account the impact of self-interference~(SI)~and quality of service provisioning.~We study the throughput and the transmit power trade-off between uplink and downlink via solving these two problems.~Each MOOP is a non-convex mixed integer non-linear programming~(MINLP)~which is generally intractable. In order to circumvent this difficulty, a penalty function is introduced to reformulate the problem into a mathematically tractable form.~Subsequently,~each MOOP is transformed into a single-objective optimization problem~(SOOP)~via the weighted Tchebycheff method which is addressed by majorization-minimization~(MM)~approach. Simulation results demonstrate an interesting trade-off between the considered competing objectives.
