蜂窝网中干扰感知的基于D2D通信上行链路联合资源分配算法研究  

Interference-Aware Joint Resource Allocation for Device- to- Device Communications Uplink Underlaying Cellular Networks

作　　者：郭超平[1] 崔玉萍[1] 解东宏[1] 高梅[1] 

机构地区：[1]西安通信学院信息传输系,西安710106

出　　处：《无线通信技术》2016年第1期6-10,共5页Wireless Communication Technology

摘　　要：在蜂窝网中进行D2D通信已被证明是一个有效的增加系统频谱效率的通信方式。借助于这种通信方式,D2D发送者在直达链路上与其接收者进行通信时与蜂窝链路共享相同的频率资源。在本文中,提出一个用户设备配对和功率控制的方案。它在满足每个D2D对设备以及每个蜂窝用户设备的信干噪比要求下,最小化D2D链路和蜂窝链路的总干扰。基站采用图论的方法为每个蜂窝用户设备和每个D2D设备分配最优的功率,使用修正Hungarian算法选择一个最优的蜂窝用户设备与D2D对进行配对。仿真结果表明,文中提出的方案不仅能够降低D2D用户和蜂窝用户产生的干扰,而且能够增加允许的D2D连接。Device- to- device（ D2D） communications underlying cellular networks,whereby D2 D transmitter communicates with its receiver over direct link while sharing the same radio resource of cellular link,has been shown to be an effective way to increase system spectral efficiency. In this paper,a joint user equipment pairing and power control scheme is proposed to minimize total interference of D2 D links and cellular links,such that each D2 D pair and each cellular user equipment（ CUE） satisfy their Signal to Interference plus Noise Ratio. The base station assigns power to each CUE and each D2 D transmitter by graphic method,and selects the optimal CUE to pair with D2 D pair by modified Hungarian algorithm in order to minimize total interference caused by them. The simulation results show that the proposed scheme can not only decrease the interference caused by D2 D pair and that caused by CUE,but also increase the number of permitted D2 D connections.

关 键 词：D2D通信 功率控制 资源分配 

分 类 号：TN929.5[电子电信—通信与信息系统]