Patent ID: 11949483
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method according to claim 1,
wherein the precoding matrix,
F(l)=[G1(l)T G2(l)T, of a l-th transmission layer is represented by a double sum notation
G1(l)=α(l)Σu=0U(l)−1bu(l)Σd=0Du(l)−1γ1,u,d(l)d1,u,dT for a first polarization of the antenna ports, and
G2(l)=α(l)Σu=0U(l)−1bu(l)Σd=0Du(l)−1γ2,u,d(l)d2,u,dT for a second polarization of the antenna ports,
wherein bu(l)(u=0, . . . ,U(l)−1) represents U(l) selected beam components or Discrete Fourier Transform based beam vectors selected from the first codebook for N1N2 antenna ports,
wherein N1 refers to a first portion of the plurality of antenna ports of a first polarization in a first dimension of an antenna array,
wherein N2 refers to a second portion of the plurality of antenna ports of a second polarization in a second dimension of the antenna array,
wherein Dp,u,d(l)(d=0, . . . ,D(l)−1) represents D(l) delay components or Discrete Fourier Transform based delay vectors for the u-th beam selected from the second codebook,
wherein the amount of Discrete Fourier Transform based delay vectors D(l) is identical for all the beams,
wherein γp,u,d(l) are the complex combination coefficients associated with the Ul selected beam vectors and D(l) selected delay vectors,
wherein α(l) is a normalizing scalar.