Dynamic Interference Optimization in Cognitive Radio Networks for Rural and Suburban Areas

Algorithm 1

Optimization algorithm for minimizing interference and reducing spectrum usage.

Input: users, traffic, BSs, TV;

1: Generate (Green-Field_Network);

2: while Sim < Max_Sim

3:  for u_i < users

4:   for BS_j < BSs

5:     Set_Radiated_Power (u_i,BS_j);

6:     for ISL_min : 1 dB : ISL_max);

7:     Evaluate_Interference (u_i,BS_j);

8:     Set_Spectrum_Allocation (u_i,BS_j);

9:     end for;

10:     if fit (u_i,BS_j) > current_fit

11:      if Active (BS_j) && Bitrate (BS_j)

12:       connect;

13:      end if;

14:     end if;

15:     if unconnected

16:      set_active BS (best_fit_i);

17:      connect;

18:      load_balance;

19:     end if;

20:   end for;

21:  end for;

22:  for u_i < users

23:   while connected (u_i)

24:    BS_Radiated_Power--;

25:   end while;

26:  end for;

27:  generate (Network_Solution);

28: end while;

Output

29: Network_Solutions;