Microcell propagation measurements at three different antenna heights

Novel microcellular systems have been proposed to operate over a relatively short radio path (on the order of 200 m to 1000 m), using relatively low base station antennas and transmitting at relatively low power (typically on the order of 10 mW). To study how radio signals propagate in small cell environments, measurements have been conducted by the Telesis Technology Laboratory in the San Francisco Bay area at three different transmitting antenna heights (3.2 m, 8.7 m, and 13.4 m), in two frequency bands (900 MHz and 1900 MHz), and in three different propagation environments (rural, suburban, and urban). For urban and suburban areas, the receiving mobile was driven along preselected line-of-sight (LOS), zig-zag, and staircase routes to gather information about direct propagation along streets, as well as diffraction over roofs in suburban areas, and diffraction around corners in urban areas.<>