Energy-Efficient Hybrid Precoding Scheme Based on Antenna Selection Technology in Massive Multiple-Input Multiple-Output Systems

Algorithm 3

Half-interval search method.

Initialization: , and

 1: while do

 2:  

 3:  Solve the problem (35) for a given ,

 4:  update and .

 5:  If let . Otherwise, .

 6: end while

 7: