Patent ID: 11863267
Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 13:
14. The method of claim 13, wherein the pilot signal generation step comprises:
a switch control step of controlling a signal switching switch configured between a transmission communication module and a pilot signal generation module and a phase shift network to connect the pilot signal generation module to the phase shift network;
a Zadoff-Chu sequence generation step of generating a Zadoff-Chu sequence by the following (Equation 1) based on a predetermined signal generation parameter after the pilot signal generation module is connected to the phase shift network by the switch control step; and
a transmission pilot signal generation step of generating the same number of transmission pilot signals as the number of transmission antennas by the following (Equation 2) based on the Zadoff-Chu sequence generated in the Zadoff-Chu sequence generation step,, z
        q
       
       (
       k
       )
      
      =
      
       e
       
        
         -
         j
        
        ⁢
        π
        ⁢
        q
        ⁢
        
         
          k
          ⁡
          (
          
           k
           +
           1
          
          )
         
         
          N
          ZC
         
        
       
      
     
     ,
     
      k
      =
      0
     
     ,
     1
     ,
     2
     ,
     …
        
     ,
     
      
       N
       ZC
      
      -
      1
     
    
   
   
    
     (
     
      Equation
      ⁢
         
      1
     
     )
    
   
  
 

(zq(k): Zadoff-Chu sequence generated based on signal generation parameters, k: sample order of the sequence, NZC: length of the generated sequence (signal), q: a variable that determines the characteristics of the sequence using a prime number smaller than NZC), p
        n
       
       (
       k
       )
      
      =
      
       
        z
        q
       
       (
       
        
         {
         
          k
          -
          
           n
           ⁢
           
            ⌊
            
             
              N
              zc
             
             /
             
              N
              tx
             
            
            ⌋
           
          
         
         }
        
        ⁢
        mod
        ⁢
        
         N
         zc
        
       
       )
      
     
     ,
     

     
      k
      =
      0
     
     ,
     1
     ,
     
      
       …
       ⁢
          
       
        N
        zc
       
      
      -
      1
     
     ,
     
      n
      =
      0
     
     ,
     1
     ,
     
      
       …
       ⁢
          
       
        N
        tx
       
      
      -
      1
     
    
   
   
    
     (
     
      Equation
      ⁢
         
      2
     
     )
    
   
  
 

(pn(k): transmission pilot signal of the n-th transmission antenna generated based on the Zadoff-Chu sequence, └ ┘: rounding down operation, Ntx: total number of transmission antennas connected to the phase shift network).