The Precoder Design with Covariance Feedback for Simultaneous Information and Energy Transmission Systems

Algorithm 3

Subalgorithm 2.1: solve .

(1) Initialization: the iteration index , , where .

(2) Repeat

  Update according to , ; .

(3) Until all ’s converge to the predetermined accuracy.

(4) If there exists some such that but does

   not converge to 0, find , set

   and =0, update , and go to Step ; otherwise end this procedure.