TY - GEN
T1 - Secrecy outage of cooperative relay network with and without eavesdropper's direct link
AU - Chopra, Khyati
AU - Bose, Ranjan
AU - Joshi, Anupam
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/10/19
Y1 - 2017/10/19
N2 - In this paper, a source communicates to the destination with the cooperation of a relay, in the presence of an eavesdropper. All the links undergo Rayleigh fading and perfect decoding at the relays is not considered. The secrecy outage probability expression is evaluated for a decode-and-forward (DF) dual-hop cooperative relay network, both with and without the presence of direct source to eavesdropper transmission link. The performance of the maximal ratio combining (MRC) and selection combining (SC) diversity at the eavesdropper is investigated. Asymptotic and diversity gain analysis for both the single relay and multi-relay system is obtained, when average SNRs of source-relay and relay-destination links are balanced or unbalanced. We have shown that the increase in target secrecy rate and eavesdropper channel quality significantly affects the outage performance of the system. We have investigated the outage probability of optimal relay selection scheme, when either full instantaneous channel state information (ICSI) or statistical channel state information (SCSI) of all the links is available and have shown that there is improvement in the secrecy performance with the increase in the number of relays.
AB - In this paper, a source communicates to the destination with the cooperation of a relay, in the presence of an eavesdropper. All the links undergo Rayleigh fading and perfect decoding at the relays is not considered. The secrecy outage probability expression is evaluated for a decode-and-forward (DF) dual-hop cooperative relay network, both with and without the presence of direct source to eavesdropper transmission link. The performance of the maximal ratio combining (MRC) and selection combining (SC) diversity at the eavesdropper is investigated. Asymptotic and diversity gain analysis for both the single relay and multi-relay system is obtained, when average SNRs of source-relay and relay-destination links are balanced or unbalanced. We have shown that the increase in target secrecy rate and eavesdropper channel quality significantly affects the outage performance of the system. We have investigated the outage probability of optimal relay selection scheme, when either full instantaneous channel state information (ICSI) or statistical channel state information (SCSI) of all the links is available and have shown that there is improvement in the secrecy performance with the increase in the number of relays.
UR - http://www.scopus.com/inward/record.url?scp=85039968948&partnerID=8YFLogxK
U2 - 10.1109/NCC.2017.8077065
DO - 10.1109/NCC.2017.8077065
M3 - Conference contribution
AN - SCOPUS:85039968948
T3 - 2017 23rd National Conference on Communications, NCC 2017
BT - 2017 23rd National Conference on Communications, NCC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 23rd National Conference on Communications, NCC 2017
Y2 - 2 March 2017 through 4 March 2017
ER -