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Understanding Spatio-Temporal Uncertainty in Medium Access with ALOHA Protocols

Understanding Spatio-Temporal Uncertainty in Medium Access with ALOHA Protocols. Affan Syed, Wei Ye, Bhaskar Krishnamachari, and John Heidemann ACM Proceedings of the second workshop on Underwater networks (WuWNet 2007). Outline. Introduction Spatio-Temporal Uncertainty

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Wave Packets

Wave Packets. Recall that for a wave packet x k~1 to localize a wave to some region x we need a spread of wavenumbers k de Broglie hypothesis  =h/p or p=h/  but k=2/ and p=(h/2)(2/) = ħ k h bar p= ħ k and x p~ ħ x p  ħ uncertainty principle.

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