毫米波D2D通信上下行链路吞吐量优化方案

Uplink and downlink throughput optimization scheme for millimeter wave D2D communication

5G通信技术中终端直通(D2D通信)的功率分配是近期研究的热点,为了提升系统容量和频谱利用率,将毫米波与D2D通信技术结合,在此技术中,针对28GHz频段上行链路及下行链路蜂窝网络中的D2D资源分配进行了研究,将其系统总吞吐量达到最大化算法进行优化。首先,推导出每个D2D对所对应的准入集,其次,在考虑每个D2D对用户以及蜂窝用户功率控制情况下,分别求出上行链路及下行链路中的吞吐量,最后,在保证D2D对总吞吐量最大化前提下将蜂窝用户信道分配给D2D对。仿真结果表明,所提出的方案可以提高系统的吞吐量。

The power distribution of terminal direct communication(D2D communication)in 5G communication technology is a hot topic in recent research.In order to improve system capacity and spectrum utilization,this paper combines millimeter wave and D2D communication technology.In this technology,it is aimed at 28GHz frequency band uplink.The D2D resource allocation in the road and downlink cellular networks is studied,and the total system throughput is maximized to optimize the algorithm.First,the admission set corresponding to each D2D pair is derived.Secondly,considering the power control of each D2D to the user and the cellular user,the throughput in the uplink and downlink is respectively determined.Finally,the D2D is guaranteed.The cellular user channel is assigned to the D2D pair on the premise of maximizing the total throughput.On the surface of the simulation results,the proposed algorithm can significantly improve the throughput of the system.