摘要
为优化蜂窝用户通信与设备直传(D2D)中继通信共存下的同频干扰问题,满足蜂窝用户容量要求,提出了一种基于能效的联合资源分配和功率控制的D2D中继选择算法。该算法首先对等效D2D中继链路进行资源分配,减小算法复杂度的同时使得D2D链路对蜂窝链路产生的干扰最小;然后以资源分配结果和功率控制算法为依据进行中继选择。该方案不仅考虑了D2D中继链路的能效问题,而且还同时考虑到了对蜂窝链路的干扰问题。通过仿真验证,所提算法不仅能有效提升D2D中继链路的能效值,同时降低了对蜂窝用户的干扰。
In order to optimize the problem of co-channel interference（CCI） after introducing the device-to-device（D2D） relay communication,and to meet the cellular user capacity requirements,a D2D relayselection algorithm based on energy efficiency combined resource allocation with power control is proposed.Firstly,the algorithm allocates spectral resource to the equivalent D2D relay links,reduces the complexity ofthe algorithm and minimizes the interference caused by the D2D link to the cellular link,and then selectsthe relay based on the resource allocation result and the power control algorithm. The scheme considers notonly the energy efficiency of the D2D relay link but also the cellular interference problem. Simulationproves that the proposed algorithm can not only improve the energy efficiency of the D2D relay link,but al-so reduce the interference to the cellular users.
出处
《电讯技术》
北大核心
2017年第12期1433-1439,共7页
Telecommunication Engineering
基金
长江学者和创新团队发展计划资助项目(IRT1299)
重庆市科委重点实验室专项经费资助项目(cstc2013yykf A40010)
关键词
D2D中继通信
资源分配
功率控制
中继选择
频谱效率
D2D relay communication
resource allocation
power control
relay selection
spectral efficiency
