摘要
在5G系统中,毫米波(mmWave)与终端直通(D2D)通信技术有利于提升系统吞吐量和频谱利用率。针对28 GHz下的underlay蜂窝网络,提出一种D2D资源分配方案,以减少D2D用户在蜂窝网络中复用蜂窝资源时所带来的整体干扰。利用线性相关方法找出每一个D2D用户可复用的蜂窝用户集合。对D2D用户进行功率控制以确保D2D用户的通信质量。同时,为达到最大化系统总吞吐量的优化目标,提出一种基于干扰管理的启发式算法,并利用匈牙利算法求出最优匹配。仿真结果表明,与随机分配算法和个体干扰最小算法相比,该算法能够有效减少干扰,提高系统的总吞吐量和频谱利用率。
In the 5G system,millimeter wave(mmWave)and Device-to-Device(D2D)communication technology are beneficial to improve the system throughput and spectrum utilization.For underlay cellular network under 28 GHz,a D2D resource allocation scheme is proposed to reduce the overall interference when D2D users reuse cellular resources in the cellular network.The linear correlation method is used to find out the reusable cellular user set for each D2D user.In order to ensure the communication quality of D2D users,the power of D2D users is controlled.Meanwhile,in order to maximize the total throughput of the system,a heuristic algorithm based on interference management is proposed,and the optimal matching is obtained by using the Hungarian algorithm.Simulation results show that,compared with the random assignment algorithm and the individual interference minimization algorithm,this algorithm can effectively reduce the interference,improve the total throughput and spectral efficiency of the system.
作者
文凯
陈永丽
颜飙
WEN Kai;CHEN Yongli;YAN Biao(Research Center of New Communication Technology Application, Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Chongqing Information Technology Designing Co.,Ltd.,Chongqing 401121,China)
出处
《计算机工程》
CAS
CSCD
北大核心
2018年第11期90-94,共5页
Computer Engineering
基金
重庆市研究生科研创新项目(CYS15166)
关键词
终端直通技术
毫米波
功率控制
资源分配
吞吐量
Device-to-Device(D2D)technology
millimeter wave(mmWave)
power control
resource allocation
throughput
作者简介
文凯(1972—),男,高级工程师、博士,主研方向为移动通信、认知网络;陈永丽,硕士研究生;颜飙,硕士研究生。
