Time delay spread measurements at 850 MHz and 1.7 GHz inside a metropolitan office building

摘要

Time delay spread and signal level measurements were made in a multistoried office building in New York City at 850 MHz and 1.7 GHz. No significant statistical difference in time delay spread was found at the two frequencies. The maximum root-mean-square time delay spread at both frequencies did not exceed 100 ns. Attenuation was very nearly the same at the two frequencies, within the limits of the experiment's accuracy.