毫米波D2D通信网络拓扑演化建模

Topology Evolution Modeling of Millimeter Wave D2D Communication Networks

D2D通信技术能显著提高通信系统的频谱效率,有效降低终端发射功率,在一定程度上缓解了无线通信系统频谱资源匮乏的问题。毫米波通信的窄波束则能有效抑制D2D对之间的相互干扰,从而实现一对多、多对多的通信链路,但其通信网络拓扑更加密集复杂。首先分析了毫米波D2D网络特性,然后提出了一种D2D网络拓扑演化模型,随之分析了其邻接矩阵、节点度、特征谱等网络特征,最后进行了仿真实现。仿真实验表明,所提模型能准确反映毫米波D2D网络的拓扑演化过程,揭示出D2D网络模型介于小世界网络模型和无标度网络模型之间。

D2D communication technology can significantly improve the frequency spectrum efficiency of the communication system, effectively reduce the terminal transmission power, and to a certain extent alleviate the lack of spectrum resources in the wireless communication system. The narrow beam of millimeter wave communication can effectively suppress the mutual interference between D2D pairs, so as to achieve one-to-many and many-to-many communication links. But its communication network topology is more dense and complex. In this paper, the characteristics of millimeter wave D2D network are analyzed first, then a topology evolution model of D2D network is proposed, and then the network characteristics such as adjacency matrix, node degree and characteristic spectrum are analyzed. Finally, the simulation is carried out. Simulation results show that the proposed model can accurately reflect the topological evolution process of MMW D2D network, revealing that the D2D network model is between the small-world network model and the scale-free network model.