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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Opportunistic secrecy with a strict delay constraint
IEEE Transactions on Communications, Volume 61, No. 11, Article 6630484, Year 2013
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Description
We investigate the delay limited secrecy capacity of the flat fading channel under two different assumptions on the available transmitter channel state information (CSI). The first scenario assumes perfect prior knowledge of both the main and eavesdropper channel gains. Here, upper and lower bounds on the delay limited secrecy capacity are derived, and shown to be tight in the high signal-to-noise ratio (SNR) regime. In the second scenario, only the main channel CSI is assumed to be available at the transmitter where, remarkably, we establish the achievability of a non-zero delay-limited secure rate, for a wide class of channel distributions, with a high probability. In the two cases, our achievability arguments are based on a novel two-stage key-sharing approach that overcomes the secrecy outage phenomenon observed in earlier works. © 1972-2012 IEEE.
Authors & Co-Authors
Khalil, Karim
United States, Columbus
The Ohio State University
Egypt, 6th October
Nile University
Koyluoglu, O. Ozan
United States, Columbus
The Ohio State University
United States, Tucson
The University of Arizona
El-Gamal, Hesham
United States, Columbus
The Ohio State University
Youssef, Moustafa Amin
Egypt, New Borg el Arab
Egypt-japan University of Science and Technology
Statistics
Citations: 17
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1109/TCOMM.2013.101113.130356
ISSN:
00906778