Patent ID: 11967829
Assignee: UIF (UNIVERSITY INDUSTRY FOUNDATION), YONSEI UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The channel estimating apparatus according to claim 5, wherein the transmitting channel updating unit updates the transmitting channel by Equation 6, on the basis of the fixed phase variable and the fixed reflecting surface channel,, G
      =
      
       
        G
        _
       
       -
       
        
         Vh
         ⁡
         (
         
          G
          _
         
         )
        
        K
       
      
     
     ,
    
   
   
    
     [
     
      Equation
      ⁢
         
      6
     
     ]
    
   
  
 

where {tilde over (G)} is the transmitting channel G before being updated, K is a step size

∇h(G), acquired by a backtracking line search method, and
is a gradient of the reflecting surface channel according to the transmitting channel.