Jaehwan JeongJeongho KwakSong ChongEnergy-efficient beam scheduling for orthogonal random beamforming in cooperative networks.1-82017WiOpthttps://dl.ifip.org/db/conf/wiopt/wiopt2017/1570330277.pdfhttps://doi.org/10.23919/WIOPT.2017.7959884conf/wiopt/2017db/conf/wiopt/wiopt2017.html#JeongKC17