MULTIPATH IMPULSE-RESPONSE MODELING FOR INDOOR CHANNEL USING TD-BEM

indoor radio networks operating in the millimetre-wave frequency range may offer large information transport capacity and more sharply defin ed cell boundaries. The main features of the propagation in an indoor radio environment are multipath, due to reflection or diffraction from the walls and surrounding objects, and shadowing of the direct or lin e-of-sight propagation path by intervening obstacles. This paper prese nts a prediction technique for the multipath impulse response inside a confined cell/room with high resolution. The technique is based on a deterministic model developed using the Time-Domain Boundary Element M ethod (TD-BEM). Given the complete specifications of the structural en vironment (room size and shape, wall and furnishing materials), the di scussed model can predict the impulse responses, the multipath spread and the frequency-selective characteristics of wireless indoor channel s. Both modelled and measured results are given for a 37.2-GHz wireles s system operating in two different environments, demonstrating the mo del's ability to predict adequate results.