Patent ID: 11863361
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 21:
22. The FD LOFO compensation method of claim 20, wherein the FD impulse response of the fractional FFT bins-based oscillator is defined as:, h
   ⁡
   (
   f
   )
  
  =
  
   {
   
    
     
      
       
        
         π
         
          4
          ⁢
          
           F
           ref
          
         
        
        ⁢
        sin
        ⁢
        
         c
         ⁡
         (
         
          1
          
           2
           ⁢
           α
          
         
         )
        
       
       ,
        
      
     
     
      
       f
       =
       
        ±
        
         
          F
          ref
         
         
          2
          ⁢
          α
         
        
       
      
     
    
    
     
      
       
        
         1
         
          F
          ref
         
        
        ⁢
        sin
        ⁢
        
         c
         ⁡
         (
         
          f
          
           F
           ref
          
         
         )
        
        ⁢
        
         
          cos
          ⁡
          (
          
           
            πα
            ⁢
            f
           
           
            F
            ref
           
          
          )
         
         
          1
          -
          
           
            (
            
             
              2
              ⁢
              
               α
               ⁢
               f
              
             
             
              F
              ref
             
            
            )
           
           2
          
         
        
       
       ,
        
      
     
     
      otherwise, where Fref is a reference frequency related to a width of the TD window, α is a roll-off factor of the RC and f is a given frequency.