基于干扰对齐的D2D混合网络干扰管理研究  

Interference Alignment-based Interference Management in D2D Communications

作　　者：薛峰[1] 马蓓[2] 

机构地区：[1]中国电信股份有限公司福建分公司网络发展部,福建福州350000 [2]西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西西安710071

出　　处：《电子科技》2016年第3期140-144,共5页Electronic Science and Technology

摘　　要：针对如何有效抑制蜂窝与D2D混合网络中的干扰问题,提出了一种基于干扰对齐的干扰协调策略。通过建立k对D2D用户(DUE)复用蜂窝用户(CUE)上行资源的干扰模型,并分别在发送端和接收端设计发送干扰抑制预编码,使得在某一接收端处的干扰均对齐在接收信号的零空间上,从而抑制区内和区间两大干扰。仿真证明,文中所提出的基于干扰对齐的功率分配方案,比其他算法能获得更大的系统总速率,从而最大化混合网络的自由度。An interference suppressing method based on interference alignment for cancelling the interferences of the hybrid networks of the cellular and D2 D users is proposed. Firstly an k-pair D2 D interference model is built,then the transmit and receive precoding matrices are designed to align the interferences to the null space of the receiver. The proposed strategy can effectively suppress both the intra-interference and the inter-interference. The simulation results show that the proposed IA-based power allocation scheme achieves better sum-rate than the other schemes.

关 键 词：干扰对齐 D2D通信 自由度 

分 类 号：TN911.4[电子电信—通信与信息系统]