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The collision channel with recovery

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3 Author(s)
S. Tinguely ; Swiss Fed. Inst. of Technol., Zurich, Switzerland ; M. Rezaeian ; A. J. Grant

We consider a simple conceptual model of random accessing to a receiver deploying multiuser detection techniques. The model is a simple extension of Massey and Mathys' collision channel without feedback in which a certain probability of recovery from collision is introduced. As the main result, we derive the slot-synchronized capacity region of this recovery channel and show that for sufficiently powerful multiuser detectors, maximal performance is achieved without any sophisticated transmission protocols. We also explore the effect of a simple fading model.

Published in:

IEEE Transactions on Information Theory  (Volume:51 ,  Issue: 10 )