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Wireless physical layer security has attracted a considerable recent attention. One of the approaches for generating secret keys among different users is by using some physical properties of wireless networks. Since secret keys are valuable resources, how to efficiently use a key to achieve perfect secrecy is as important as how to generate a key. The flexibility to control the size of cipher-text...
In this paper, we study the energy-efficient distributed estimation problem for a wireless sensor network where a physical phenomena that produces correlated data is sensed by a set of spatially distributed sensor nodes and the resulting noisy observations are transmitted to a fusion center via noise- corrupted channels. We assume a Gaussian network model where (i) the data samples being sensed at...
A scheme that exploits the broadcast nature of the wireless communication in order to achieve multicast content delivery is presented in this paper. As opposed to broadcasting, this method enables the clients to determine on-line the delivered content, and thus preserves the advantages of an individual service. On the other hand, a multicast content delivery is much more efficient than a unicast content...
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