Performance Analysis And Simulation Platform Implementation Of D2D Assisted Cellular Network

To cope with the challenges posed by the rapidly growing number and traffic of wireless devices,it is necessary for the current cellular network to develop new communication technologies to provide users with high-performance communication services.By introducing D2 D communication into modern cellular systems,the energy efficiency and spectral efficiency of the entire network can be effectively improved.However,when applied to actual cellular communication,there are still problems such as resource allocation and co-channel interference.Therefore,resource allocation and coordinated interference of D2 D communication in cellular networks is a key issue in D2 D communication technology research.In order to analyze the system performance under different spectrum allocation modes in the hybrid network and improve the overall spectrum efficiency and energy efficiency of the D2 D communication and cellular network hybrid system in the underlay mode,we need the system capacity and D2 D user average in different scenarios.The throughput is verified by simulation.Due to the extremely rich actual communication scenarios of cellular communication networks and the high cost of performance measurement experiments,we designed and developed a hybrid network system level simulation platform that applies D2 D communication in cellular networks.The simulation platform supports link level and system level.Two-level simulation.System-level simulation mainly supports multiple network design,user location design,mobility design,business model design and resource management module design.Link-level simulation mainly supports the design of the transmission channel,the design of the data transmitting end,and the design of the data receiving end.The platform can support multi-scenario simulation in D2 D and cellular hybrid networks to meet our needs for performance analysis of hybrid network systems.Finally,in order to verify the impact of system parameters on user performance in D2 D communication and cellular network hybrid heterogeneous scenarios,we need to analyze the variation rules of system indicators under different parameters to provide constructive suggestions for system parameter setting and optimization.According to the actual requirement of D2 D communication and cellular communication system coexistence,we simulated the influence of system parameters on network performance in cellular mode,overlay mode and underlay mode,and obtained the throughput and system capacity under different working modes based on the simulation platform.