Patent ID: 11881916
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. The apparatus according to claim 12, wherein when m is greater than 2, the determining of Hm+ of Hm of the K users comprises:
calculating Hm+ by using a formula, H
      m
      +
    
    =
    
      
        
          (
          
            
              H
              
                m
                -
                1
              
            
            +
            
              
                β
                
                  n
                  
                    m
                    -
                    1
                  
                
              
              *
              
                β
                
                  n
                  
                    m
                    -
                    1
                  
                
                H
              
            
          
          )
        
        
          -
          1
        
      
      =
      
        
          H
          
            m
            -
            1
          
          +
        
        -
        
          
            
              H
              
                m
                -
                1
              
              +
            
            ⁢
            
              β
              
                n
                
                  m
                  -
                  1
                
              
            
            *
            
              β
              
                n
                
                  m
                  -
                  1
                
              
              H
            
            ⁢
            
              H
              
                m
                -
                1
              
              +
            
          
          
            1
            +
            
              
                β
                
                  n
                  
                    m
                    -
                    1
                  
                
                H
              
              ⁢
              
                H
                
                  m
                  -
                  1
                
                +
              
              ⁢
              
                β
                
                  n
                  
                    m
                    -
                    1
                  
                
              
            
          
        
      
    
  
  ,

wherein Hm-1+ represents a generalized inverse matrix of a channel value matrix Hm-1 of the K users in the (m−1)th iteration, and βnm-1 represents a column that is in Hm-1 and that corresponds to an antenna index nm-1 selected in the (m−1)th iteration.