Patent ID: 11916626
Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The base station of claim 9, wherein the beam codeword vm is obtained, by an equation below:, v
   m
  
  =
  
   
    
     
      (
      
       AA
       H
      
      )
     
     
      -
      1
     
    
    ⁢
    A
    ⁢
    
     
      g
      ~
     
     m
    
   
   
    
     
     
      
       
        (
        
         AA
         H
        
        )
       
       
        -
        1
       
      
      ⁢
      A
      ⁢
      
       
        g
        ~
       
       m
      
     
     
    
    2
   
  
 

the beam gain vector [gm]k is estimated, based on an amplitude factor T(m) and a phase factor ak for mitigating beam gain fluctuation within the m-th beam coverage, by an equation below:, [
     
      
       g
       ^
      
      m
     
     ]
    
    k
   
   =
   
    
     1
     
      T
      ⁡
      (
      
       a
       k
      
      )
     
    
    ⁢
    
     exp
     [
     
      
       -
       j
      
      ⁢
      
       
        
         (
         
          N
          -
          1
         
         )
        
        ⁢
        π
        ⁢
        
         a
         k
        
       
       2
      
     
     ]
    
   
  
  ,
  
   k
   ∈
   
    {
    
     1
     ,
     2
     ,
     …
        
     ,
     K
    
    }
   
  
 

wherein N is a number of antennas of the base station, and K is a number of over-sampled AoDs.