一种基于信干比的最佳转发节点的选举算法  

Signal-to-interference-plus-noise ratio-based best forwarding selection algorithm

作　　者：张冉 常猛 Zhang Ran;Chang Meng(School of Information Engineering,Nanyang Vocational College of Agriculture,Nanyang 473000,China;Modern Educational Technology Center,Nanyang Vocational College of Agriculture,Nanyang 473000,China)

机构地区：[1]南阳农业职业学院信息工程学院,南阳473000 [2]南阳农业职业学院现代教育技术中心,南阳473000

出　　处：《国外电子测量技术》2021年第7期90-94,共5页Foreign Electronic Measurement Technology

基　　金：2018年度河南省重大科技专项资助。

摘　　要：针对非正交多址接入(non-orthogonal multiple access, NOMA)协作的全双工-设备间(full-duplex-device to device, FD-D2D)通信系统,提出基于信干比的最佳转发节点的选举算法(SBFS)。先计算D2D数据源端(D2D-S)的信干比(SINR),再从可用的FD-D2D通信对中选择具有最大SINR的D2D-S节点分享蜂窝频谱,作为蜂窝用户与基站间的转发节点,进而提高蜂窝传输效率。同时,D2D-S端采用自干扰抑制技术消除自干扰,并采用功率分割策略分配在蜂窝上行链路和D2D链路间的资源。在D2D链路接收端采用串行干扰消除策略解码信号。最后,推导了蜂窝链路和D2D链路中断概率的表达式,并通过仿真实验研究了功率分割因子和串行干扰消除参数对中断概率的影响。For non-orthogonal multiple access(NOMA) aided FD cooperative D2 D communication system. Signal-to-Interference-plus-noise ratio-based best forwarding selection(SBFS) is proposed in this paper. In SBFS algorithm, the Signal-to-Interference-plus-noise ratio of D2 D source(D2 D-S) is computed. And among all available FD-D2 D user pairs, the D2 D-S that can achieve the largest SINR is selected to share the cellular spectrum, and the D2 D-S is used to forwarding node that communication between base station and cellular user. A self-interference suppression technique is used at the FD node to cancel self-interference. In addition, a power splitting protocol is employed to divide resources between the cellular uplink and the D2 D link transmission. Further, successive interference cancellation is used at D2 D receiver to decode the signals. The analytical expressions for achievable rates of the cellular and D2 D links and their outage probabilities are derived. Results show that the proposed SBFS suggests the choice of optimal values for parameters such as the power splitting factor and the SIS parameters to improve the performance of the cellular and D2 D users.

关 键 词：D2D通信系统 全双工 非正交多址接入 信干比 中断概率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]