基于信干噪比的d2d通信功率控制与资源分配!.pdfVIP

第57卷 第5期 电讯技术 Vol.57,No.5 2017年5月 Telecommunication Engineering May,2017 doi:10.3969/ j.issn.1001-893x.2017.05.013 引用格式:董作霖.基于信干噪比的D2D通信功率控制与资源分配[J]. 电讯技术,2017,57(5):568-574. [DONG Zuolin.D2D communication power control and resource allocation based on SINR[J].Telecommunication Engineering,2017,57(5):568-574. ] 基于信干噪比的D2D通信功率控制与资源分配* 董作霖** (河南工学院教务处,河南 新乡453003) 摘摇 要:为了优化长期演进(LTE)系统引入设备直传(D2D)通信后带来的同频干扰、系统边缘用户 性能恶化问题,提出一种基于信干噪比(SINR)的多小区D2D通信资源分配方案,通过调整信干噪 比阈值将部分蜂窝用户(CU)转化为D2D用户并释放频谱资源进而获得较佳的资源分配策略,同时 提出一种基于小区间D2D竞争机制的配置算法有效降低小区间干扰。 仿真表明,算法能够有效提 升系统容量,并提升小区边缘D2D用户公平性。 关键词:设备直传通信;功率控制;资源分配;信干噪比;系统容量;用户公平性 中图分类号:TN92摇 摇 文献标志码:A摇 摇 文章编号:1001-893X(2017)05-0568-07 D2D Communication Power Control and Resource Allocation Based on SINR DONGZuolin (Office of Academic Affairs,Henan Institute of Technology,Xinxiang453003,China) Abstract:Inordertosolvetheproblemof co-channelinterference(CCI)andthedeteriorationof systemper鄄 formance after introducing the device-to-device(D2D) communication to the Long Term Evolution(LTE) system,thispaperproposesamulti-cell D2Dcommunicationresourceallocation schemebasedon signal-to- interference plus noiseratio(SINR).The scheme convertscellular user(CU)into D2Duser by adjustingthe threshold of the signal-to-noise ratio(SNR) and releases spectrum resource,and then obtains a better re鄄 source allocationstrategy.Meanwhile,anallocationalgorithmisproposedtoreducetheinter-cellinterference (ICI)based on the inter-cell D2D competition mechanism. Simulation shows that the proposed algorithm can effectively increase the system capacity and enhance the cell edge D2Dusers爷fairne