Patent ID: 11863363
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The wireless communication receiver of claim 1, wherein:
said group cyclic shift de-multiplexing performed by said discrete Fourier transform unit includes:, y
    u
   
   =
   
    
     (
     
      0
      ,
      …
         
      ,
      0
      ,
      
       y
       
        
         n
         1
        
        (
        u
        )
       
      
      ,
      
       y
       
        
         n
         2
        
        (
        u
        )
       
      
      ,
      …
         
      ,
      
       y
       
        
         n
         L
        
        (
        u
        )
       
      
      ,
      0
      ,
      …
         
      ,
      0
     
     )
    
    T
   
  
  ⁢
  

  
   
    
     H
     ˆ
    
    u
   
   =
   
    
     F
     
      N
      SRS
     
    
    ⁢
    
     y
     u, where: FNSRS is a NSRS by NSRS matrixes corresponding to NSRS-point DFT; and n1(u), . . . , nL(u) are the samples defining the cyclic shift window of user u, involving zeroing-out y samples outside the cyclic shift window of user u and last stage NSRS-length DFT-based frequency interpolation.