28 GHz propagation measurements for outdoor cellular communications using steerable beam antennas in New York city

摘要: The millimeter wave frequency spectrum offers unprecedented bandwidths for future broadband cellular networks. This paper presents the world's first empirical measurements 28 GHz outdoor propagation in New York City. Measurements were made Manhattan three different base station locations and 75 receiver over distances up to 500 meters. A 400 megachip-per-second channel sounder directional horn antennas used measure characteristics mm-wave systems urban environments. measured path loss as a function of transmitter - separation distance, angular distribution received power using 24.5 dBi antennas, delay profiles observed data show that large number resolvable multipath components exist both non line sight environments, with excess spreads (20 dB) great 1388.4 ns 753.5 ns, respectively. widely diverse spatial channels at any particular location suggest mobile communication electrically steerable could exploit create viable links cell sizes on order 200 m.