Table 2 System simulation parameters

Number of cells, L

3, 4, 7

Number of BS antennas per cell, M

128

Number of users per cell, K

4, 5, 6

Log normal shadow fading, δ_shad

8 dB

Cell radius, R

500 m

Path loss exponent, α

3.8

Population size of GA, N

20

Number of iterations of GA, T

K

Number of iterations of TS, I

K

Mutation probability, p_m

0.1

Crossover probability, p_c

0.9

Loss of spectral efficiency factor, μ₀

0.05