Patent ID: 11936471
Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A high-dimensional non-orthogonal transmission method, wherein in the method, a transmitter, a plurality of users and a plurality of channel resources are provided; the transmitter is configured to process and transmit original signals of the plurality of users; the plurality of users receive and recover respective original signals; the plurality of channel resources comprise a time-domain, a frequency-domain and a space-domain resources, for the transmitter and the plurality of users to use;
the high-dimensional non-orthogonal transmission method comprises the following steps:
step 1: mapping, by the transmitter, an original signal of a uth user to a uth high-dimensional original signal, wherein the uth high-dimensional original signal is as follows:, s
    ⁡
    (
    u
    )
   
   =
   
    [
    
     
      
       
        
         
          
           
            
             
              
               s
               1
              
              (
              u
              )
             
            
           
           
            
             
              
               s
               2
              
              (
              u
              )
             
            
           
          
         
        
        
         
          ⋮
         
        
       
      
     
     
      
       
        
         s
         M
        
        (
        u
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    ]
   
  
  ,
  
   
    
     s
     1
    
    (
    u
    )
   
   =
   
    
     
      s
      2
     
     (
     u
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    =
    
     ⋯
     =
     
      
       
        s
        M
       
       (
       u
       )
      
      =
      
       
        
         s
         0
        
        (
        u
        )
       
       
        M
       
      
     
    
   
  
 

wherein s0(u) represents the original signal of the uth user, s(u) represents the uth high-dimensional original signal, s1(u) represents an ith dimension of the uth high-dimensional original signal, i=1, 2, . . . , M, and M represents a dimension of the uth high-dimensional original signal and has a value equal to a number of the channel resources;
step 2: precoding, by the transmitter, the uth high-dimensional original signal to generate a uth high-dimensional transmission signal, wherein a precoding process is as follows:, x
   ⁡
   (
   u
   )
  
  =
  
   
    [
    
     
      
       
        
         
          
           
            
             
              
               x
               1
              
              (
              u
              )
             
            
           
           
            
             
              
               x
               2
              
              (
              u
              )
             
            
           
          
         
        
        
         
          ⋮
         
        
       
      
     
     
      
       
        
         x
         M
        
        (
        u
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    ]
   
   =
   
    [
    
     
      
       
        
         
          
           
            
             
              
               
                s
                1
               
               (
               u
               )
              
              ⁢
              
               
                α
                1
               
               (
               u
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               s
               2
              
              ⁢
              
               (
               u
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              ⁢
              
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              ⁢
              
               (
               u
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          ⋮
         
        
       
      
     
     
      
       
        
         
          s
          M
         
         (
         u
         )
        
        ⁢
        
         
          α
          M
         
         (
         u
         )
        
       
      
     
    
    ]
   
  
 

wherein x(u) represents the uth high-dimensional transmission signal, xi(u) represents a ith dimension of the uth high-dimensional transmission signal, and α1(u) represents a ith dimension of a uth precoding signal;
step 3: summing up, by the transmitter, all uth high-dimensional transmission signals to obtain a total high-dimensional transmission signal:, x
   ˜
  
  =
  
   
    ∑
    
     u
     =
     1
    
    U
   
   
    x
    ⁡
    (
    u
    )
   
  
 

wherein U represents a number of the users, and {tilde over (x)} represents the total high-dimensional transmission signal; broadcasting, by the transmitter, the total high-dimensional transmission signal to all the users by the plurality of channel resources, wherein one of the plurality of channel resources is used to transmit one dimension of the high-dimensional transmission signal; and
step 4: receiving, by the uth user, the total high-dimensional transmission signal to obtain a total high-dimensional received signal, and performing matched receiving on the total high-dimensional received signal according to the uth precoding signal to obtain an estimation of a uth original signal, wherein u=1, 2, . . . , U, and a matched receiving process is as follows:, x
   
    ~
    ^
   
  
  =
  
   [
   
    
     
      
       
        
         
          
           
            
             
              x
              
               ~
               ^
              
             
             1
            
           
          
          
           
            
             
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               ~
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             2
            
           
          
         
        
       
       
        
         ⋮
        
       
      
     
    
    
     
      
       
        x
        
         ~
         ^
        
       
       M
      
     
    
   
   ]
  
 

 
  
   
    
     s
     ˆ
    
    0
   
   (
   u
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  =
  
   
    ∑
    
     i
     =
     1
    
    M
   
   
    
     
      a
      i
      *
     
     (
     u
     )
    
    ⁢
    
     
      x
      
       ˜
       ^
      
     
     i
    
   
  
 

wherein ŝ0(u) represents the estimation of the uth original signal, αi*(u) represents a conjugation of the ith dimension of the uth precoding signal, {tilde over ({circumflex over (x)})} represents the total high-dimensional received signal, {tilde over ({circumflex over (x)})}i represents an ith dimension of the total high-dimensional signal, and i=1, 2, . . . , M.