Abstract
This paper investigates secrecy performance of finite-sized cooperative full-duplex relay (FDR) systems with unreliable wireless backhaul connections across multiple transmitters under Nakagami- $m$ fading. Closed-form expressions for the secrecy outage probability and probability of nonzero achievable secrecy rate are derived in terms of self-interference (SI), transmitter cooperation, and backhaul reliability. It is shown that transmitter cooperation can effectively enhance the secrecy performance, while the asymptotic limits on the secrecy outage probability and probability of nonzero achievable secrecy rate are exclusively determined by backhaul reliability. With the aid of transmitter cooperation, the burden of SI cancelation can be alleviated for the FDR system in achieving the smallest allowed secrecy outage probability. Compared to that of a half-duplex relay (HDR) system, the FDR system achieves a lower secrecy outage probability with well suppressed SI. The analysis shows that the secrecy outage probability achieved by the FDR system converges to that of the HDR system under perfect backhaul as the target secrecy rate becomes small. The secrecy performance metrics of the considered system are verified by simulations for various backhaul scenarios.
| Original language | English |
|---|---|
| Article number | 8017511 |
| Pages (from-to) | 6185-6200 |
| Number of pages | 16 |
| Journal | IEEE Transactions on Signal Processing |
| Volume | 65 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - Dec 1 2017 |
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Keywords
- full-duplex relay
- secrecy outage probability
- two-hop relaying protocol
- Wireless backhaul
ASJC Scopus subject areas
- Signal Processing
- Electrical and Electronic Engineering
Cite this
Secrecy Performance of Finite-Sized Cooperative Full-Duplex Relay Systems with Unreliable Backhauls. / Liu, Hongwu; Kim, Kyeong Jin; Tsiftsis, Theodoros A.; Kwak, Kyung Sup; Poor, H. Vincent.
In: IEEE Transactions on Signal Processing, Vol. 65, No. 23, 8017511, 01.12.2017, p. 6185-6200.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Secrecy Performance of Finite-Sized Cooperative Full-Duplex Relay Systems with Unreliable Backhauls
AU - Liu, Hongwu
AU - Kim, Kyeong Jin
AU - Tsiftsis, Theodoros A.
AU - Kwak, Kyung Sup
AU - Poor, H. Vincent
PY - 2017/12/1
Y1 - 2017/12/1
N2 - This paper investigates secrecy performance of finite-sized cooperative full-duplex relay (FDR) systems with unreliable wireless backhaul connections across multiple transmitters under Nakagami- $m$ fading. Closed-form expressions for the secrecy outage probability and probability of nonzero achievable secrecy rate are derived in terms of self-interference (SI), transmitter cooperation, and backhaul reliability. It is shown that transmitter cooperation can effectively enhance the secrecy performance, while the asymptotic limits on the secrecy outage probability and probability of nonzero achievable secrecy rate are exclusively determined by backhaul reliability. With the aid of transmitter cooperation, the burden of SI cancelation can be alleviated for the FDR system in achieving the smallest allowed secrecy outage probability. Compared to that of a half-duplex relay (HDR) system, the FDR system achieves a lower secrecy outage probability with well suppressed SI. The analysis shows that the secrecy outage probability achieved by the FDR system converges to that of the HDR system under perfect backhaul as the target secrecy rate becomes small. The secrecy performance metrics of the considered system are verified by simulations for various backhaul scenarios.
AB - This paper investigates secrecy performance of finite-sized cooperative full-duplex relay (FDR) systems with unreliable wireless backhaul connections across multiple transmitters under Nakagami- $m$ fading. Closed-form expressions for the secrecy outage probability and probability of nonzero achievable secrecy rate are derived in terms of self-interference (SI), transmitter cooperation, and backhaul reliability. It is shown that transmitter cooperation can effectively enhance the secrecy performance, while the asymptotic limits on the secrecy outage probability and probability of nonzero achievable secrecy rate are exclusively determined by backhaul reliability. With the aid of transmitter cooperation, the burden of SI cancelation can be alleviated for the FDR system in achieving the smallest allowed secrecy outage probability. Compared to that of a half-duplex relay (HDR) system, the FDR system achieves a lower secrecy outage probability with well suppressed SI. The analysis shows that the secrecy outage probability achieved by the FDR system converges to that of the HDR system under perfect backhaul as the target secrecy rate becomes small. The secrecy performance metrics of the considered system are verified by simulations for various backhaul scenarios.
KW - full-duplex relay
KW - secrecy outage probability
KW - two-hop relaying protocol
KW - Wireless backhaul
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UR - http://www.scopus.com/inward/citedby.url?scp=85028726862&partnerID=8YFLogxK
U2 - 10.1109/TSP.2017.2745463
DO - 10.1109/TSP.2017.2745463
M3 - Article
VL - 65
SP - 6185
EP - 6200
JO - IEEE Transactions on Signal Processing
JF - IEEE Transactions on Signal Processing
SN - 1053-587X
IS - 23
M1 - 8017511
ER -