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Secure Transmission in Cooperative Networks with Weak Eavesdroppers

Sunny, Albert and Sarma, Siddhartha and Kuri, Joy (2015) Secure Transmission in Cooperative Networks with Weak Eavesdroppers. In: IEEE SIGNAL PROCESSING LETTERS, 22 (10). pp. 1693-1697.

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Official URL: http://dx.doi.org/10.1109/LSP.2015.2425043


In this letter, we propose a scheme to improve the secrecy rate of cooperative networks using Analog Network Coding (ANC). ANC mixes the signals in the air; the desired signal is then separated out, from the mixed signals, at the legitimate receiver using techniques like self interference subtraction and signal nulling, thereby achieving better secrecy rates. Assuming global channel state information, memoryless adversaries and the decode-and-forward strategy, we seek to maximize the average secrecy rate between the source and the destination, subject to an overall power budget. Then, exploiting the structure of the optimization problem, we compute its optimal solution. Finally, we use numerical evaluations to compare our scheme with the conventional approaches.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Keywords: Analog network coding; cooperative networks; physical layer security; power allocation; weak adversaries
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited: 29 May 2015 05:33
Last Modified: 23 Jul 2015 09:52
URI: http://eprints.iisc.ac.in/id/eprint/51595

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