Sum Rate Optimization for MIMO Multicasting Network with Active IRS

Algorithm 1

The BCD algorithm.

1:Initialization: Set a feasible point and .

2:repeat:

  a) Obtain by using equation ((13a) and (13b)).

  b) Obtain by solving problem ((15a)–(15c)).

  c) Obtain by solving problem ((23a)–(23c)).

  d) Update .

  e) .

3:until Converge

4: Output .