Patent ID: 11374642

Abstract:
The invention comprising: jointly determining an analog precoding matrix FRF and a plurality of multi-user groups Gl, each multi-user group Gl being associated to a respective subcarrier l, each multi-user group Gl containing a plurality of receivers to be jointly served for a data transmission on the respective subcarrier l; and using the analog precoding matrix FRF for processing at least one signal to transmit; characterized in that the joint determination comprises: /a/ optimizing a beamforming function ƒ(FRF, G1 . . . , GL) with respect to the analog precoding matrix FRF, the multi-user groups Gl being fixed; /b/ optimizing a scheduling function g(Gl,FRF) with respect to the multi-user groups Gl, a value of the analog precoding matrix FRF being fixed; wherein /a/ and /b/ are iteratively repeated.