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7 papers · 1 filter
ARQ-Based Secret Key Sharing
Mohamed Abdel Ghany, Ahmed Sultan, Hesham El Gamal
This paper develops a novel framework for sharing secret keys using existing Automatic Repeat reQuest (ARQ) protocols. Our approach exploits the multi-path nature of the wireless e…
Information Theory vs. Queueing Theory for Resource Allocation in Multiple Access Channels
Ali ParandehGheibi, Muriel Medard, Asuman Ozdaglar +1
We consider the problem of rate allocation in a fading Gaussian multiple-access channel with fixed transmission powers. The goal is to maximize a general concave utility function o…
Dynamic Rate Allocation in Fading Multiple-access Channels
Ali ParandehGheibi, Atilla Eryilmaz, Asuman Ozdaglar +1
We consider the problem of rate allocation in a fading Gaussian multiple-access channel (MAC) with fixed transmission powers. Our goal is to maximize a general concave utility func…
Resource Allocation in Multiple Access Channels
Ali ParandehGheibi, Atilla Eryilmaz, Asuman Ozdaglar +1
We consider the problem of rate allocation in a Gaussian multiple-access channel, with the goal of maximizing a utility function over transmission rates. In contrast to the literat…
Authentication over Noisy Channels
Lifeng Lai, Hesham El Gamal, H. Vincent Poor
In this work, message authentication over noisy channels is studied. The model developed in this paper is the authentication theory counterpart of Wyner's wiretap channel model. Tw…
Cognitive Medium Access: Exploration, Exploitation and Competition
Lifeng Lai, Hesham El Gamal, Hai Jiang +1
This paper establishes the equivalence between cognitive medium access and the competitive multi-armed bandit problem. First, the scenario in which a single cognitive user wishes t…