arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.07406cs.ITmath.ITmath.OC
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全双工通信中上下行链路的性能权衡

Performance Trade-off Between Uplink and Downlink in Full-Duplex Communications

Ata Khalili, Mohammad Robat Mili, Derrick Wing Kwan Ng

摘要:

在本文中,我们制定了两个多目标优化问题(MOOP)的正交频分多址(OFDMA)为基础的带内全双工(IBFD)无线通信。本研究的目的是利用上行链路和下行链路之间的性能权衡,其中无线电在同一频率上同时发送和接收。在考虑自干扰和服务质量配置的同时,将系统吞吐量最大化作为第一MOOP,将系统总功耗最小化作为第二MOOP。通过解决这两个问题,我们研究了上行链路和下行链路之间的吞吐量和发射功率权衡。每个MOOP都是一个非凸的混合整数非线性规划MINLP,一般来说是难以求解的。为了克服这一困难,引入罚函数将问题转化为数学上易于处理的形式。然后,利用加权切比雪夫方法将每个MOOP转化为单目标优化问题SOOP,并采用优化-极小化MM方法求解.仿真结果表明,所考虑的竞争目标之间的一个有趣的权衡。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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