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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
computer science
Interference alignment for secrecy
IEEE Transactions on Information Theory, Volume 57, No. 6, Article 5773067, Year 2011
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Description
This paper studies the frequency/time selective K-user Gaussian interference channel with secrecy constraints. Two distinct models, namely the interference channel with confidential messages and the interference channel with an external eavesdropper, are analyzed. The key difference between the two models is the lack of channel state information (CSI) of the external eavesdropper. Using interference alignment along with secrecy precoding, it is shown that each user can achieve non-zero secure degrees of freedom (DoF) for both cases. More precisely, the proposed coding scheme achieves K-2/2K-2 secure DoF with probability one per user in the confidential messages model. For the external eavesdropper scenario, on the other hand, it is shown that each user can achieve K-2/2K secure DoF in the ergodic setting. Remarkably, these results establish the positive impact of interference on the secrecy capacity region of wireless networks. © 2011 IEEE.
Authors & Co-Authors
Koyluoglu, O. Ozan
United States, Columbus
The Ohio State University
El-Gamal, Hesham
United States, Columbus
The Ohio State University
Egypt, 6th October
Nile University
Lai, Lifeng
United States, Little Rock
University of Arkansas at Little Rock
Vincent Poor, H. Vincent
United States, Princeton
Princeton University
Statistics
Citations: 172
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1109/TIT.2011.2132430
ISSN:
00189448