Eitan Altman Konstantin Avrachenkov Gregory Miller Balakrishna Prabhu Discrete Power Control: Cooperative and Non-Cooperative Optimization. 37-45 2007 conf/infocom/2007 INFOCOM http://dx.doi.org/10.1109/INFCOM.2007.13 db/conf/infocom/infocom2007.html#AltmanAMP07