Patent ID: 11863267
Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. The channel estimation apparatus of claim 6, wherein detecting an optimal precoding vector among precoding vectors included in a pre-stored codebook using the estimated channel information in the optimal precoding vector detection module is performed by the following (Equation 6),
wherein phase shift information corresponding to the detected optimal precoding vector is transmitted to a transmitter through the reception communication module,, i
      opt
     
     =
     
      
       argmax
       i
      
           
    
   
   
    
     (
     
      Equation
      ⁢
         
      6
     
     )
    
   
  
 

(iopt: codebook number indicating the optimal precoding vector, : estimated channel, wi: precoding vector, i: codebook number).