Table 3 Simulation parameters

Macro cell

1

Macro UE (K _mue)

12

Small cell (K)

12

Small cell UE (K _sue)

1 per small cell

Macrocell radius

500 m

Small cell radius

50 m

Cluster size (L)

2

4

6

Transmit stream (d)

2

Rx antenna (N _ue)

4

Tx antenna

macro BS (N _mbs)

48

small BS (N _sbs)

4

12

20

Channel coefficient

i.i.d. Gaussian

Path loss model

−38.46−log10(distance (km))