Patent ID: 11936468
Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The position-based multiple access communication method according to claim 6, wherein in S3, the uth precoding signal is as follows:, α
    ⁡
    (
    
     u
     ,
     
      t
      +
      
       Δ
       ⁢
       τ
      
     
    
    )
   
   =
   
    [
    
     
      
       
        
         
          
           α
           1
          
          (
          
           u
           ,
           t
          
          )
         
         +
         
          Δ
          ⁢
          
           τ
           u
          
         
        
        )
       
      
     
     
      
       
        
         α
         2
        
        (
        
         u
         ,
         
          t
          +
          
           Δ
           ⁢
           
            τ
            u
           
          
         
        
        )
       
      
     
     
      
       ⋮
      
     
     
      
       
        
         α
         M
        
        (
        
         u
         ,
         
          t
          +
          
           Δ
           ⁢
           
            τ
            u
           
          
         
        
        )
       
      
     
    
    ]
   
  
  ,, and
the ith dimension of the uth precoding signal is as follows:, α
    i
   
   (
   
    u
    ,
    
     t
     +
     
      Δ
      ⁢
      
       τ
       u
      
     
    
   
   )
  
  =
  
   
    ∏
    
     m
     =
     1
    
    L
   
   
    exp
    ⁡
    (
    
     
      -
      j
     
     ⁢
     2
     ⁢
     
      π
      ⁡
      (
      
       
        k
        m
       
       -
       1
      
      )
     
     ⁢
     Δ
     ⁢
     
      
       f
       m
      
      (
      
       t
       +
       
        Δ
        ⁢
        
         τ
         u
        
       
      
      )
     
    
    )
   
  
 

wherein, L represents a number of I/Q domain precoding layers, L≥1, km represents an index of an mth layer of I/Q domain precoding branches, 1≤km≤Mm, Mm represents a number of the mth layer of I/Q domain precoding branches, M1×M2× . . . ×ML=M and, k
    L
   
   +
   
    
     ∑
     
      m
      =
      1
     
     
      L
      -
      1
     
    
    
     [
     
      
       (
       
        
         k
         m
        
        -
        1
       
       )
      
      ⁢
      
       
        ∏
        
         l
         =
         
          m
          +
          1
         
        
        L
       
       
        M
        l
       
      
     
     ]
    
   
  
  =
  i
 

 are met, and Δfm represents a frequency increment of the mth layer.