Limited Feedback Precoding for Massive MIMO

Algorithm 1

Simulation flow.

// L: the total number of channel realizations

// N_u: the total number of UEs

// K: the number of scheduled UEs

Initialization

for  l = 1 : L

   generate the channel matrix H

   for  u = 1: 𝑁_𝑢

      compute the requested codeword 𝐖_𝑢

      report  𝐖_𝑢 to the BS

   end for

   scheduling: select K UEs from the 𝑁_𝑢 UEs

   form the precoder P

   compute the instantaneous rate  𝑅_𝑙 (formula (23))

end for

Compute the metric  1𝑅=𝐿^𝐿_𝑙∑₌₁𝑅_𝑙

output  𝑅