  In order to overcome the anticipated tremendous growth in the volume of
mobile data traffic, the next generation of cellular networks will need to
exploit the large bandwidth offered by the millimeter-wave (mmWave) band. A key
distinguishing characteristic of mmWave is its use of highly directional and
steerable antennas. In addition, future networks will be highly densified
through the proliferation of base stations and their supporting infrastructure.
With the aim of further improving the overall throughput of the network by
mitigating the effect of frequency-selective fading and co-channel
interference, 5G cellular networks are also expected to aggressively use
frequency-hopping. This paper outlines an analytical framework that captures
the main characteristics of a 5G cellular uplink. This framework is used to
emphasize the benefits of network infrastructure densification, antenna
directivity, mmWave propagation characteristics, and frequency hopping.
