Weighted Sum Secrecy Rate Optimization for Cooperative Double-IRS-Assisted Multiuser Network

Algorithm 3

The AO algorithm for problem (11).

1: Initialization: set the accuracy , a feasible point and the maximum iteration number , calculate ;

2: Repeat

3: Update and by solving problem (12) with given ;

4: Update by solving problem (23) with given ;

5: Update by solving problem (39) with given ;

6: Caculate and set;

7: Until or ;

8: Output the optimal .