Haghighat, JavadDuman, Tolga Mete2023-02-282023-02-282022-08-03http://hdl.handle.net/11693/111888Conference Name: IEEE International Symposium on Information TheoryDate of Conference: 26 June 2022 - 01 July 2022Irregular Repetition Slotted ALOHA (IRSA) achieves load thresholds very close to 1 at the expense of reduced energy efficiency compared to its competitor, Coded Slotted ALOHA (CSA). The efficiency is related to the expected number of transmitted replicas, and is upper-bounded by 0.5 in the case of IRSA. In this paper, we present a feedback-aided IRSA scheme, analyze its efficiency, and show that utilizing a very limited feedback will offer considerable improvements. Remarkably, the feedback-aided scheme enables IRSA to achieve efficiencies greater than 0.5, and in some cases, perform very close to the more complex CSA schemes.EnglishConference Paper10.1109/ISIT50566.2022.9834643