Relay Selection Schemes for Dual-Hop Networks under Security Constraints with Multiple Eavesdroppers

In this paper, we study opportunistic relay selection in cooperative networks with secrecy constraints, where a num-ber of eavesdropper nodes may overhear the source message. To deal with this problem, we consider three opportunistic relay selection schemes. The first scheme tries to reduce the overheard information at the eavesdroppers by choosing the relay having the lowest instantaneous signal-to-noise ratio (SNR) to them. The second scheme is conventional selection relaying that seeks the relay having the highest SNR to the destination. In the third scheme, we consider the ratio between the SNR of a relay and the maximum among the corresponding SNRs to the eavesdroppers, and then select the optimal one to forward the signal to the destination. The system performance in terms of probability of non-zero achievable secrecy rate, secrecy outage probability and achievable secrecy rate of the three schemes are analyzed and confirmed by Monte Carlo simulations

Title: 

	Relay Selection Schemes for Dual-Hop Networks under Security Constraints with Multiple Eavesdroppers
Authors:	Vo, Nguyen Quoc Bao Nguyen, Linh-Trung Debbah, Merouane
Keywords:	Rayleigh fading Security constraints Achievable secrecy rate Secrecy outage probability
Issue Date:	2013
Publisher:	H. : ĐHQGHN
Citation:	ISIKNOWLEDGE
Abstract:	In this paper, we study opportunistic relay selection in cooperative networks with secrecy constraints, where a num-ber of eavesdropper nodes may overhear the source message. To deal with this problem, we consider three opportunistic relay selection schemes. The first scheme tries to reduce the overheard information at the eavesdroppers by choosing the relay having the lowest instantaneous signal-to-noise ratio (SNR) to them. The second scheme is conventional selection relaying that seeks the relay having the highest SNR to the destination. In the third scheme, we consider the ratio between the SNR of a relay and the maximum among the corresponding SNRs to the eavesdroppers, and then select the optimal one to forward the signal to the destination. The system performance in terms of probability of non-zero achievable secrecy rate, secrecy outage probability and achievable secrecy rate of the three schemes are analyzed and confirmed by Monte Carlo simulations
Description:	TNS07125 ; IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS Volume: 12 Issue: 12 Pages: 6076-6085 Published: DEC 2013
URI:	http://repository.vnu.edu.vn/handle/VNU_123/27333
Appears in Collections:	Bài báo của ĐHQGHN trong Web of Science