Reconfigurable Intelligent Surface-Aided AirComp for Large-Scale IoT Networks

Algorithm 1

DC Algorithm for (17).

1: Initialize X⁰ and threshold .

2: t1;

3: repeat

4:Compute the leading eigenvalue of , and obtain ;

   Solve problem (17) to obtain ;

5: ;

6: until;

7: Then;

8: Cholesky decomposition to get .