Dispersive Effects in Wide-Band Wireless Links Operating in Long Corridors

Abstract

Indoor propagation of radio waves in tunnels and long corridors is studied theoretically and experimentally. The theoretical model is based on ray-tracing, using quasi-optical approach [1]-[4]. In multi-ray propagation, the received signal at a carrier frequency f is given as a summation of interfering rays arriving at the receiving sight. This includes the line-of-sight (LOS) ray, as well as reflected rays in the horizontal and vertical dimensions from the tunnel walls, ceiling and floor. At any point in the tunnel cross-section (x,y), the normalized transfer function of the field is given as a summation of arriving rays [2-4]: