Patent ID: 11949480
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The method of claim 1, wherein each sub-codebook of the set of sub-codebooks comprises a set of codewords generated via:, c
    
     i
     ,
     l
    
   
   =
   
    
     L
     b
    
    +
    
     l
     ⁢
     Δ
    
    +
    
     
      (
      
       i
       +
       0.5
      
      )
     
     ⁢
     δ
    
   
  
  ,
  
   wherein
   :
  
 

 
  
   
    c
    
     i
     ,
     l
    
   
   ⁢
      
   is
   ⁢
      
   the
   ⁢
      
   l
   -
   th
   ⁢
      
   codeword
   ⁢
      
   in
   ⁢
      
   sub
   -
   codebook
   ⁢
      
   
    C
    i
   
  
  ,
 

 
  
   i
   -
   th
   ⁢
       
   
    (
    
     0
     <=
     i
     <=
     3
    
    )
   
   ⁢
      
   sub
   -
   codebook
   ⁢
      
   is
   ⁢
   
       
   
   denoted
   ⁢
   
       
   
   as
   ⁢
   
       
   
   
    C
    i
   
  
  ;
 

 
  
   
    C
    i
   
   =
   
    
     {
     
      c
      
       i
       ,
       l
      
     
     }
    
    
     l
     =
     0
    
    
     
      N
      2
     
     -
     1
    
   
  
  ;
 

 
  
   
    c
    
     i
     ,
     l
    
   
   =
   
    
     L
     b
    
    +
    
     l
     ⁢
     Δ
    
    +
    
     
      (
      
       i
       +
       0.5
      
      )
     
     ⁢
     δ
    
   
  
  ;
 

 
  
   N
   =
   
    2
    n
   
  
  ;
 

 
  
   n
   =
   
    bit
    ⁢
       
    size
    ⁢
       
    of
    ⁢
       
    the
    ⁢
       
    T
    ⁢
    C
    ⁢
    Q
    ⁢
       
    scheme
   
  
  
   ;
  
 

 
  
   Δ
   =
   
    
     
      U
      b
     
     -
     
      L
      b
     
    
    
     N
     /
     2
    
   
  
  ;
 

 
  
   
    δ
   
   =
   
    
     
      U
      b
     
     -
     
      L
      b
     
    
    
     2
     ⁢
     N
    
   
  
  ;, and
Lb and Ub are, respectively, lower bound and upper bound of the obtained phase information.