Mobility

Towards Achieving Full Secrecy Rate and Low Delays in Wireless Networks

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Executive Summary

The authors consider a single-user secure data communication system. Data packets arriving at the transmitter are enqueued at a data queue to be transmitted to the receiver over a block fading channel, securely from an eavesdropper that listens to the transmitter over another independent block fading channel. Part of the data is secured by the available secrecy rate while the other part is encrypted by the key bits, enqueued at both the transmitter and the receiver. They propose a power controller, transmission controller and an admission controller based on simple index policies that do not rely on any prior statistical information on the data arrival process and channel conditions. They show that their controllers have a provably efficient performance and solve the above two problems simultaneously.

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