LTE-R Communication System Safety Performance Analysis Based on Cloud Theory and Combined Weighting

To solve the problem of single evaluation method of LTE-R communication system safety performance, a cloud theory and combined weighting method was proposed. Firstly, the index system of LTE-Railway (LTE-R) communication system was established. Secondly, combining with the dynamic weighting method, the subjective & objective weighting values of the evaluation system calculated by 3-scale AHP and CRITIC were fused. Thirdly, by determining the cloud digital characteristics of the comprehensive cloud theory, the cloud evaluation system was established, and then the cloud parameters of each layer of the evaluation system were calculated from bottom to top by the reverse cloud theory. An example showed that the method was feasible and effective.