  While research on communications at frequencies above 6 gigahertz (GHz) has
been primarily confined to performance improvement, their potentially harmful
impacts on human health are not studied as significantly. Most of the existing
studies that paid attention to the health impacts above 6 GHz focused only on
the uplink due to closer contact with a transmitter to a human body. In this
letter, we present the human electromagnetic field (EMF) exposure in the
downlink of Fifth-Generation Wireless Systems (5G). Moreover, we propose a
downlink protocol that guarantees the EMF exposure under a threshold while
keeping the data rate above the 5G requirements.
