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

Claim 6:
7. The channel estimation apparatus of claim 6, wherein the channel estimation module comprises:
a reception pilot signal generation module configured to generate reception pilot signals by using beamforming information from the transmitter obtained by the reception communication module; and
a calculation module configured to perform a channel estimation operation by the following (Equation 5) using transmission pilot signals from the transmitter received by the reception communication module and reception pilot signals generated by the reception pilot signal generation module,, ∑
       
        n
        =
        0
       
       
        N
        -
        1
       
      
      
       
        1
        ρ
       
       ⁢
       
        y
        ⁡
        (
        n
        )
       
       ⁢
       
        
         p
         H
        
        (
        n
        )
       
      
     
     =
         
   
   
    
     (
     
      Equation
      ⁢
         
      5
     
     )
    
   
  
 

(: estimated channel, ρ: constant for normalization, pH(n): a value obtained by performing a Hermitian operation on p(n),, y
    ⁡
    (
    n
    )
   
   =
   
    
     ∑
     
      l
      =
      0
     
     
      L
      -
      1
     
    
    
     
      h
      l
      T
     
     ⁢
     
      p
      ⁡
      (
      
       n
       -
       l
      
      )
     
    
   
  
  ,
  
   
    h
    l
   
   ∈
   
    ℂ
    
     
      N
      tx
     
     ×
     1
    
   
  
  ,
  
   
    p
    ⁡
    (
    n
    )
   
   ∈
   
    
     ℂ
     
      
       N
       tx
      
      ×
      1
     
    
    :
   
  
 

 a transmission pilot signal received from a single reception antenna, p(n): a pilot including samples of the transmission pilot signal of each transmission antenna vector, hl: the channel vector of the l-th path among multipath channels).