Design And Realization Of The Co-simulation Platform For Ultra-wave Communication Network

Since computer simulation is economic, security, reliability, and has shorterexperimental cycle, it attracts more attention and has been widely used in theengineering field. Nowadays, simulation technology has been played an important rolein the research and analysis of wireless communication network, especially in theultra-short wave communication network. Although there exist still many problemsusing the computer simulation, the main key is how to establish a precise and effectivesimulation model. The quality of the model directly affects the performance of the entiresimulation system. Therefore, building a precise and effective simulation modelbecomes the key point of computer simulation.Ultra-short wave communication becomes more and more important in wirelesscommunications. Compared with the shortwave, satellite and other means ofcommunication, it has its own unique advantages, such as low costs of running andmaintenance, fast network building, easy emergency recovery after damage. Therefore,simulation for ultra-short wave communication is particularly important. Commonnetwork simulation tools are for the layers above the link layer, mainly for the processof data packet transferring in the network layer. These tools ignore the modeling of thephysical layer, particularly simulation for the process of signal transmission. Obviously,this will affect the simulation results of the entire network. Moreover, ultra-short waveusing high-frequency electromagnetic wave which is absorbed by the ground mostlyand couldn’t be reflected by the ionosphere is transmitted, and thus it can only betransferred straightly. Therefore, It should be take into account that geographicalenvironment and electromagnetic interference and other factors have a great impact onultra-short wave transmission.The main works of this paper are as follows:1) We designed a simulation system of ultra-short wave communication, whichachieved high-precision. Firstly, using network-level simulation tool named Omnet++,we built the device node model of ultra-short wave communication system. Secondly,we built a channel simulation model and the electromagnetic environment simulationmodel respectively by the simulation software Simulink and the Wireless InSite. Finally,these two models provided the SNR-BER and the path loss with great impact on thephysical layer signal transmission to the physical layer model of the above device nodemodel.2) Three type of interference model in the channel simulation are built to simulatethe signal transmission during their interference, in order that the simulation systemobtains the approximate result to the real application in the design of physical layermodel. Moreover, since different types of antenna extensively affect the path loss, the paper provides the platform and antenna simulation model with HFSS to WI.3) Several built typical simulation scenarios are tested. By analyzing the test resultsof the system simulation model,we verify the accuracy of the ultra-short wavecommunication network simulation model. Especially under the practical applicationbackground, the physical layer simulation model obtains more accurately than thetraditional empirical formuladoes, and also approximates to the real scene.