Survey of Green Radio Communications Networks: Techniques and Recent Advances

Table 3

Cell size and transmitted power for a heterogeneous network [20].

Cell type	Cell size	Output power
Macro	1–30 km	Tens of watts
Micro	0.4–2 km	1–6.3 W
Pico	4–200 m	200 mW–2 W
Femto	10 m	20–200 mW