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

Algorithm 5

Mainalgorithm 2: solve the dual problem P2.

(1) Initialization: the iteration index , ,

  , and . Compute

  and according to Sub-algorithm 2.2 (see Algorithm 4).

(2) Repeat

  Update according to (a) and (b) in Algorithm 2,

  respectively; compute and , according

  to Sub-algorithm 2.2 (see Algorithm 4); increase .

(3) Until converges to the prescribed accuracy.