Optimization of Energy Efficiency for Uplink Wireless Information and Downlink Power Transfer System with Imperfect CSI

Algorithm 1

Iteration algorithm for problem (17) with the transformed objective function.

Input

 : maximal number of iteration;

 : sufficient small number;

 : iteration index;

 : energy efficiency; 1.3

Output

 : optimal solution;

 : Optimal energy efficiency;

1: ;

2: while, do {main}

3: Given , solve the problem 3 and get a solution

4: if

5:  return and

6: else

    and

7: end if

8: end while