Multipath delay spread and path loss correlation for 910-MHz urban mobile radio propagation

Performance of some mobile radio systems is limited both by multipath delay spread and average path loss. This paper presents data indicating a low correlation between delay spread and path loss at 910 MHz for 100 small areas within a 2 × 2 ½-km region. Some small areas with low path loss have large delay spread. The region extends from 1.5 to 3.5 km from a base station on a 120-m high building in New York City. The region is representative of heavily built-up downtown districts of many large U.S. cities.