Hybrid Differential Evolution with Biogeography-Based Optimization for Design of a Reconfigurable Antenna Array with Discrete Phase Shifters

Algorithm 2

procedure Habitat migration

Begin

  for 𝑖=1 to NP

       Select X_i with probability based on 𝜆_𝑖

      if rand(0,1)<𝜆_𝑖 then

      for   𝑗=1 to NP

      Select X_j with probability based on 𝜇_𝑗

      if  rand(0,1)<𝜇_𝑗 then

         Randomly select an SIV 𝜎 from X_j

         Replace a random SIV in X_i with 𝜎

      end if

     end for

      end if

  end for

End