Boche, H.H.BocheSchubert, M.M.Schubert2022-03-102022-03-102007https://publica.fraunhofer.de/handle/publica/35577910.1109/SPAWC.2007.44013572-s2.0-48049090046en621On the existence of a proportionally fair operating point for wireless communication systemsconference paper