The radio propagation enviroment for universal digital portable communications

walls, ceilings and objects. Quantitative descriptions of propagation parameters such as time delay spread, attenuation, crosspolarization coupling and various signal correlations are needed to facilitate the design of an efficient and reliable Universal Digital Portable Communications System. Only in recent years have m asurements of these n eded propagation parameters been made. The radio pr pagation environment for Universal Digital Portable Communications will be illustrated using results from recent propagation measurements made within and around houses and buildings.