Patent ID: 11888558
Assignee: LG ELECTRONICS INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The method of claim 3, wherein the codebook further includes a third codebook for a rank 3 using the 4 antenna ports, and
wherein the third codebook is based on the following table., TPMI
W

index
(ordered from left to right in increasing order of TPMI index)

0-3

  
    1
    2
  
  ⁡
  
    [
    
      
        
          1
        
        
          0
        
        
          0
        
      
      
        
          0
        
        
          1
        
        
          0
        
      
      
        
          0
        
        
          0
        
        
          1
        
      
      
        
          0
        
        
          0
        
        
          0
        
      
    
    ]
  

  
    1
    2
  
  ⁡
  
    [
    
      
        
          1
        
        
          0
        
        
          0
        
      
      
        
          0
        
        
          1
        
        
          0
        
      
      
        
          1
        
        
          0
        
        
          0
        
      
      
        
          0
        
        
          0
        
        
          1
        
      
    
    ]
  

  
    1
    2
  
  ⁡
  
    [
    
      
        
          1
        
        
          0
        
        
          0
        
      
      
        
          0
        
        
          1
        
        
          0
        
      
      
        
          
            -
            1
          
        
        
          0
        
        
          0
        
      
      
        
          0
        
        
          0
        
        
          1
        
      
    
    ]
  

  
    1
    
      2
      ⁢
      
        3
      
    
  
  ⁡
  
    [
    
      
        
          1
        
        
          1
        
        
          1
        
      
      
        
          1
        
        
          
            -
            1
          
        
        
          1
        
      
      
        
          1
        
        
          1
        
        
          
            -
            1
          
        
      
      
        
          1
        
        
          
            -
            1
          
        
        
          
            -
            1
          
        
      
    
    ]
  

 

4-6

  
    1
    
      2
      ⁢
      
        3
      
    
  
  ⁡
  
    [
    
      
        
          1
        
        
          1
        
        
          1
        
      
      
        
          1
        
        
          
            -
            1
          
        
        
          1
        
      
      
        
          j
        
        
          j
        
        
          
            -
            j
          
        
      
      
        
          j
        
        
          
            -
            j
          
        
        
          
            -
            j
          
        
      
    
    ]
  

  
    1
    
      2
      ⁢
      
        3
      
    
  
  ⁡
  
    [
    
      
        
          1
        
        
          1
        
        
          1
        
      
      
        
          
            -
            1
          
        
        
          1
        
        
          
            -
            1
          
        
      
      
        
          1
        
        
          1
        
        
          
            -
            1
          
        
      
      
        
          
            -
            1
          
        
        
          1
        
        
          1
        
      
    
    ]
  

  
    1
    
      2
      ⁢
      
        3
      
    
  
  ⁡
  
    [
    
      
        
          1
        
        
          1
        
        
          1
        
      
      
        
          
            -
            1
          
        
        
          1
        
        
          
            -
            1
          
        
      
      
        
          j
        
        
          j
        
        
          
            -
            j
          
        
      
      
        
          
            -
            j
          
        
        
          j
        
        
          j
        
      
    
    ]
  

—.