Patent ID: 11909571
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The method according to claim 1, wherein when L=4, the generating a reference signal of a first signal comprises:
performing discrete Fourier transform on elements in a sequence {z(t)} to obtain a sequence {f(t)} with t=0, . . . , 4K−1, wherein when t=0, 1, . . . , 4K−1,, z
      ⁡
      
        (
        t
        )
      
    
    =
    
      
        
          w
          delta
        
        ⁡
        
          (
          
            ⌊
            
              t
              K
            
            ⌋
          
          )
        
      
      ⁢
      
        x
        ⁡
        
          (
          
            t
            ⁢
            
              
            
            ⁢
            mod
            ⁢
            
              
            
            ⁢
            K
          
          )
        
      
    
  
  ,, and wherein w0=(1,1,1,1), w1=(1,j,−1,−j), w2=(1,−1,1,−1), w3=(1,−j,−1,j), └c┘ represents rounding down of c, and x(t) represents the first sequence; and
mapping elements numbered 4p+delta in the sequence {f(t)} to subcarriers each having the subcarrier number of u+L×p+delta, respectively, to generate the reference signal, wherein p=0, . . . , K−1.