Reliability Modeling and Evaluation of Wireless Communication System Based on FTA

System failure mode and cause analysis are the basis for studying system reliability. Aiming at the difficulties existing in the process of reliability quantitative analysis, such as the large number of wireless communication system devices and the complex failure distribution, this paper proposes a reliability modeling and evaluation method for wireless communication systems based on fault tree analysis. On the basis of the fault tree analysis method, the fault tree model and the fault tree probability composition function of the wireless communication system are established. Through the qualitative analysis of the fault tree, the minimum cut set of the fault tree is solved, the type of equipment failure distribution is refined, the appropriate index parameters are selected to quantitatively evaluate the reliability, and the test and analysis are carried out in combination with the experimental data.