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

Claim 26:
27. A signal processing method, comprising:
generating a local sequence, wherein the local sequence is a first sequence {x(n)} or a conjugate transpose of the first sequence, the local sequence is used to process a first signal, and the first signal is a signal modulated by using π/2 binary phase shift keying (BPSK), wherein the first sequence {x(n)} meets a preset condition xn=y(n+m)mod K,, y
      n
    
    =
    
      A
      ·
      
        e
        
          
            j
            ×
            π
            ×
            
              s
              n
            
          
          8
        
      
    
  
  ,, wherein M∈{0, 1, 2, . . . , 5}, a length of the first sequence is K=6, A is a non-zero complex number, and j=√{square root over (−1)}, and wherein a sequence {s(n)} comprises at least one of the following sequences:
{1, −3, 1, 5, −1, 3}, {1, −3, 1, −7, 7, −5}, {1, 5, 1, −5, −1, −3}, {1, 5, 1, −3, 1, 5}, {1, 7, 1, −5, −7, −1}, {1, 5, 1, 5, −5, 5}, {1, 5, 1, −1, 3, 7}, {1, −3, 1, −5, −1, 3}, {1, −3, 1, 5, 3, 7}, {1, 5, 3, 7, −1, −5}; and
receiving a reference signal of the first signal on a first frequency-domain resource, wherein the first frequency-domain resource comprises K subcarriers each having a subcarrier number of k, k=u+L×n+delta, n=0, 1, . . . , K−1, L is an integer greater than or equal to 2, delta∈{0, 1, . . . , L−1}, u is an integer, the subcarrier numbers are numbered in ascending or descending order of frequencies, and the reference signal is generated by using the first sequence, and wherein the first sequence varies as a value of the delta varies.