Table 12 Scalability analysis of the proposed PSO-C&CG algorithm.
Performance metric | Small-scale system | Medium-scale system | Large-scale system |
|---|---|---|---|
Number of users | 50 | 200 | 500 |
C&CG iterations | 15 | 18 | 22 |
Total computation time (s) | 90.8 | 238.4 | 724.6 |
Master problem time (s) | 43.3 | 118.2 | 358.7 |
Subproblem time (s) | 47.5 | 120.2 | 365.9 |
