Patent ID: 11876581
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. The method of claim 11 wherein:
each entry of the advanced CSI codebook of coefficients is identified by an index k
the entry of the advanced CSI codebook of coefficients with index k comprises a vector or matrix Ck of complex variables with L′ rows and r columns, L′ and r being positive integers;
each of (L′−1)r elements of each entry comprises a scalar complex value that can be one of N complex values;, 
      
        
          C
          
            k
            1
          
        
        -
        
          C
          
            k
            2
          
        
      
      
    
    F
  
  >
  0, where k1≠k2 are indices of different codebook entries, and ∥C∥F is a Frobenius norm of a matrix or vector C;
the advanced CSI codebook of coefficients comprises N(L′-l)r entries; and
the subset of codebook entries comprises one of KM entries, where K N and M<(L′−1)r are positive integers and each entry in the subset of codebook entries of codebook entries is identified by an index.