Power Optimization of Tilted Tomlinson-Harashima Precoder in MIMO Channels with Imperfect Channel State Information

Algorithm 1

The proposed power loading algorithm.

   Λ=0.01; % initial value for Λ

   𝑃_Total = nT; % Total transmit power

   Calculate 𝐴_𝑘,𝛽_𝑘,Λ

Loop: Calculate 𝐏

   If 𝐏_transmit−𝐏→0 then 𝐏_transmit=𝐏 end

   Else if 𝐏>𝐏_transmit, Break;

   Else Λ=(𝑃_𝑇/𝑃_𝑇)×Λ, go to loop

   end