Transmission Strategy Design and Resource Allocation in D2D Multicast Cooperative Communications with SWIPT

Algorithm 1

Joint Power Split Factor and D2D Interference Optimization Algorithm.

1. Initialize .

2. If , order , if not, jump to step 5.

Solve problem(19):

When the restricted condition (22) is satisfied,

the optimal solution    is equation (26);

When the restricted condition (23) is satisfied,

the optimal solution    is equation (27);

When the restricted condition (24) is satisfied,

the optimal solution    is equation (28);

If the above restricted conditions are not satisfied,

output the optimal solution  .

3.If the solution of step 2 satisfies the condition (30),

output is equation (32). Or else,   .

4.Here, the optimal solution of problem (18) is an array

, calculate by formula (19).

Update , return step 2.

5.Find the best channel ,

and output the optimal solution  .