задачка по математике

[tormoz108]

TS 38.913
Study on Scenarios and Requirements for Next Generation Access Technologies; (Release 14)

Сценарий для indoor решений
дано:

ISD (inter-site distance)
20m
(Equivalent to 12TRPs per 120m x 50m)

BS antenna elements
Around 30GHz or Around 70GHz: Up to 256 Tx and Rx antenna elements
Around 4GHz: Up to 256 Tx and Rx antenna elements

Comments

[jnuk]

30 GHz - it is about 1 cm wavelength. An array of, say 100 elements would be at a scale of a meter.
For 4GHz it is a bit more difficult. But for 256 elements we are still taking about less than a couple of square meters or so.