Modelling of wireless electromagnetic environment effects in multi-interconnected metallic cabins using the leapfrog ADI-FDTD method

Wireless technologies continue to be an active area of research. Thus it is important to predict multipath effects of complex channel environments precisely. Although experimental approaches are reliable and close to reality, they can be very expensive due to the requirement for special equipment and setup; and in many cases, it is inconvenient or impossible to preset testing environments. Thus, in this paper, a rigorous fullwave numerical solution, via the leapfrog alternating direction implicit finite difference time domain (Leapfrog ADI-FDTD) method for lossy media, is applied to characterize the channel of multi-interconnected metallic cabins. By comparing the simulation results with the conventional FDTD, the proposed method demonstrates both good simulation efficiency and high accuracy. Electromagnetic effects on a human body in the multi-interconnected metallic cabins are also simulated. Various propagation characteristics are captured such as the power-delay time constant that describes the multipath time delay effect.