Modeling of an indoor propagation channel for digital TV signal using FDTD

Though analysis of an indoor propagation channel has been conventionally used the ray-tracing method, in this paper using three dimension of finite difference time domain methods can easily and exactly be obtained three-dimensional complex structures. An excitation signal of FDTD made use of plane wave. An absorbing boundary condition used the most reflection less perfectly matched layer in the outset plane. An empty room surrounded a wall composed of brick, concrete and case that there are indoor furniture in the room were simulated. As simulation outcome, we could identify frequently rising reflection, refraction, scattering of objects and a fading effect of multi-path at indoor propagation environment, calculate mean excess delay and rms delay spread for receiver design.