Ergodic Secret Alignment

In this paper, the authors introduce two new achievable schemes for the fading Multiple ACcess WireTap channel (MAC-WT). In the model that they consider, they assume that perfect knowledge of the state of all channels is available at all the nodes in a causal fashion. Their schemes use this knowledge together with the time-varying nature of the channel model to align the interference from different users at the eavesdropper perfectly in a one-dimensional space while creating a higher dimensionality space for the interfering signals at the legitimate receiver, hence allowing for better chance of recovery.

Provided by: Institute of Electrical & Electronic Engineers Topic: Networking Date Added: Mar 2012 Format: PDF

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