Non-Colliding First Messages in Slotted ALOHA: Further Insights Toward a Practical Solution

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Executive Summary

Node selection is one of the most basic problems in distributed systems: one out of many nodes should be selected in a distributed manner to undertake a certain task. Various algorithms and theorems have been proposed for different systems and modeling assumptions, designed to optimize different performance criteria. Also in wireless communication systems, node selection is an important building block in many scenarios. It is needed, for instance, for data processing techniques in sensor networks to choose a "Data gathering node" and for cooperative diversity techniques in relaying networks to choose a "Relay node".

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