Duman, Tolga M.Karakoç, N.2019-02-212019-02-212017-12http://hdl.handle.net/11693/50180Date of Conference: 4-8 Dec. 2017Conference name: GLOBECOM 2017 - IEEE Global Communications Conference, 2017In this paper, we consider a random access scheme over wireless fading channels based on slotted ALOHA where each user independently decides whether to send a packet or not to a common receiver at any given time slot. To characterize the system throughput, i.e., the expected sum- rate, an information theoretic formulation is developed. We consider two scenarios: classical slotted ALOHA where no multi-user detection (MUD) capability is available and slotted ALOHA with MUD. Our main contribution is that the optimal rates and channel activity probabilities can be characterized as a function of the user distances to the receiver to maximize the system throughput. In addition, we address the issue of fairness among the users and provide solutions, which guarantee a minimum amount of individual throughput.EnglishThroughputReceiversWireless communicationEncodingRayleigh channelsMultiuser detectionConference Paper10.1109/GLOCOM.2017.8254951