Stability of a Random Multiple Access Channel with "Success-Failure'' Feedback

We consider a model of a decentralized multiple access system with a non- standard binary feedback where the empty and collision situations cannot be distinguished. We show that, like in the case of a ternary feedback, for any input rate\ lambda< 1/e, there exists a" doubly randomized" adaptive transmission protocol which stabilizes the behavior of the system. We discuss also a number of related problems and formulate some hypotheses.