D2D通信中信道分配与功率优化联合算法  

Joint algorithms of channel allocation and power optimization in D2D communication

作　　者：覃琦超 翟雷 QIN Qichao;ZHAI Lei(School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《现代电子技术》2020年第23期11-14,19,共5页Modern Electronics Technique

基　　金：广西自然科学基金(2018GXNSFBA281057)。

摘　　要：D2D通信技术能够有效降低基站的负担、减少通信时延、扩大通信系统的系统容量。事实上,吞吐量作为衡量系统容量的关键指标之一,能够直观地反映通信系统的优劣。在D2D通信系统中,D2D用户通过复用蜂窝用户的频谱资源完成通信过程,但其带来的共道干扰会影响系统的吞吐量。为此,提出一种多用户间频谱复用与功率控制优化算法,该算法首先通过信道干扰系数矩阵并结合多用户间的最低信干噪比(SINR)需求实现多用户间的最佳匹配,然后在D2D用户功率约束下,通过控制D2D用户的功率使系统的吞吐量达到最大。仿真结果表明,所提方法能显著提高系统的吞吐量。D2D communication technology can effectively reduce the burden of base station and communication delay,and expand the capacity of communication system.In fact,throughput is a key indicator of system capacity,which can reflect the advantages and disadvantages intuitively.However,in the D2D communication system,the co-channel interference caused by D2D users multiplexing the spectrum resources of cellular users may affect the throughput of the system.In this paper,an optimization algorithm for multi-user spectrum multiplexing and power control is proposed.Firstly,the optimal matching among multi-users is achieved by combining the channel interference coefficient matrix with the minimum signal-to-interference-noise ratio(SINR)requirement among multi-users.The throughput of the system can be maximized by controlling the power of D2D users under the power constraint of D2D users.The simulation results show that the proposed method can significantly improve the system throughput.

关 键 词：D2D通信 信道分配 功率优化 频谱复用 功率控制 吞吐量提高 

分 类 号：TN921-34[电子电信—通信与信息系统]