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Table 1 Strategies under consideration

From: Achievable rates optimization for broadcast channels using finite size constellations under transmission constraints

Transmission Variables Constraints Designation
SM Uniform distribution for P UX SM X , P UX ¯ , P X ¯
SM P UX s.t. i , j p i , j =1 Symbol locations: M-PAM SM X ¯ , P UX , P X
SM   SM X , P UX , P X
  P UX s.t. i , j p i , j =1   
SC P UX s.t. i p i , j = 1 M Symbol locations: M-PAM SC X ¯ , P UX , P X ¯
   Uniform distribution for P X  
SC Uniform distribution for P X SC X , P UX , P X ¯
  P UX s.t. i p i , j = 1 M   
SC P UX s.t. i , j p i , j =1 Symbol locations: M-PAM SC X ¯ , P UX , P X
SC   SC X , P UX , P X
  P UX s.t. i , j p i , j =1