Initialization: 𝑤 0 = 0 and 𝑝 0 = 0 ;
𝐖 𝐡 𝐢 𝐥 𝐞 𝑘 = 1 , 2 , 3 , 𝑁 .
 Compute 𝑧 𝑘 according to the first equation of (3.5) for fixed 𝑤 𝑘 1 .
 Compute 𝑤 𝑘 according to the second equation of (3.5) for fixed 𝑧 𝑘 .
End
 Compute 𝑢 = e x p ( 𝑤 ) .
Algorithm 1: Alternating minimization algorithm for solving the model (3.4).