Thebookassumesabasicknowledgeofmulti-antennatechnologiesandcoversthephysicallayeraspectsrelatedtobeamoperation,suchasinitialaccess,detailsofreferencesignaldesign,beammanagement,andDLandULdatachanneltransmission.Thecontributorsalsoprovideabriefoverviewofst