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

Algorithm 2

: Alternate DC algorithm for .

1: Initialize⁰ with a random value and set threshold .

2: t 1

3: repeat

4: For a given , solve (18) via Algorithm 1 to

   get .

5: For a given , solve (19) via Algorithm 1 to

   get ^t+1

6: ;

7: until

8: then.