might be on the order of 200 m. But actually, these type
of absorptions are useful as it will efciently increase the
segregation of each cell by further attenuating the background
interference from more distant base stations [67].
So from the above explanation, it is inferred that the propagation
losses for millimeter wave frequencies are resolvable,
but only by steering the beam energy with the help of large
antenna arrays and then collect it coherently. But for practical
viability, the concept of narrow beam communication is fresh
for cellular communications and poses problems like: