Wireless Secure Communications via Cooperative Relaying and Jamming

Ling TANG; Hao CHEN; Jianhui WU

doi:10.1587/transcom.E95.B.2774

Wireless Secure Communications via Cooperative Relaying and Jamming

Ling TANG, Hao CHEN, Jianhui WU

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We consider wireless secure communications between a source and a destination aided by a multi-antenna relay, in the presence of an eavesdropper. In particular, two cooperation schemes of the relay are explored: cooperative relaying (CR) and cooperative jamming (CJ). We first investigate the transmit weight optimization of CR and CJ, for both cases with and without the eavesdropper's channel state information (ECSI). Then, for the case with ECSI, we derive the conditions under which CR achieves a higher secrecy rate than CJ; for the case without ECSI, we compare the secrecy rates of CR and CJ in high transmit power regimes. Building on this, we propose a novel hybrid scheme in which the relay utilizes both CR and CJ, and study the power allocation of the relay between CR and CJ for maximizing the secrecy rate under individual power constraints. Further, we study the case with imperfect channel state information (CSI) for both CR and CJ. At last, extensive numerical results are provided.

Publication: IEICE TRANSACTIONS on Communications Vol.E95-B No.9 pp.2774-2784

Publication Date: 2012/09/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E95.B.2774

Type of Manuscript: PAPER

Category: Fundamental Theories for Communications

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Ling TANG, Hao CHEN, Jianhui WU, "Wireless Secure Communications via Cooperative Relaying and Jamming" in IEICE TRANSACTIONS on Communications, vol. E95-B, no. 9, pp. 2774-2784, September 2012, doi: 10.1587/transcom.E95.B.2774.
Abstract: We consider wireless secure communications between a source and a destination aided by a multi-antenna relay, in the presence of an eavesdropper. In particular, two cooperation schemes of the relay are explored: cooperative relaying (CR) and cooperative jamming (CJ). We first investigate the transmit weight optimization of CR and CJ, for both cases with and without the eavesdropper's channel state information (ECSI). Then, for the case with ECSI, we derive the conditions under which CR achieves a higher secrecy rate than CJ; for the case without ECSI, we compare the secrecy rates of CR and CJ in high transmit power regimes. Building on this, we propose a novel hybrid scheme in which the relay utilizes both CR and CJ, and study the power allocation of the relay between CR and CJ for maximizing the secrecy rate under individual power constraints. Further, we study the case with imperfect channel state information (CSI) for both CR and CJ. At last, extensive numerical results are provided.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E95.B.2774/_p

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@ARTICLE{e95-b_9_2774,
author={Ling TANG, Hao CHEN, Jianhui WU, },
journal={IEICE TRANSACTIONS on Communications},
title={Wireless Secure Communications via Cooperative Relaying and Jamming},
year={2012},
volume={E95-B},
number={9},
pages={2774-2784},
abstract={We consider wireless secure communications between a source and a destination aided by a multi-antenna relay, in the presence of an eavesdropper. In particular, two cooperation schemes of the relay are explored: cooperative relaying (CR) and cooperative jamming (CJ). We first investigate the transmit weight optimization of CR and CJ, for both cases with and without the eavesdropper's channel state information (ECSI). Then, for the case with ECSI, we derive the conditions under which CR achieves a higher secrecy rate than CJ; for the case without ECSI, we compare the secrecy rates of CR and CJ in high transmit power regimes. Building on this, we propose a novel hybrid scheme in which the relay utilizes both CR and CJ, and study the power allocation of the relay between CR and CJ for maximizing the secrecy rate under individual power constraints. Further, we study the case with imperfect channel state information (CSI) for both CR and CJ. At last, extensive numerical results are provided.},
keywords={},
doi={10.1587/transcom.E95.B.2774},
ISSN={1745-1345},
month={September},}

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TY - JOUR
TI - Wireless Secure Communications via Cooperative Relaying and Jamming
T2 - IEICE TRANSACTIONS on Communications
SP - 2774
EP - 2784
AU - Ling TANG
AU - Hao CHEN
AU - Jianhui WU
PY - 2012
DO - 10.1587/transcom.E95.B.2774
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E95-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2012
AB - We consider wireless secure communications between a source and a destination aided by a multi-antenna relay, in the presence of an eavesdropper. In particular, two cooperation schemes of the relay are explored: cooperative relaying (CR) and cooperative jamming (CJ). We first investigate the transmit weight optimization of CR and CJ, for both cases with and without the eavesdropper's channel state information (ECSI). Then, for the case with ECSI, we derive the conditions under which CR achieves a higher secrecy rate than CJ; for the case without ECSI, we compare the secrecy rates of CR and CJ in high transmit power regimes. Building on this, we propose a novel hybrid scheme in which the relay utilizes both CR and CJ, and study the power allocation of the relay between CR and CJ for maximizing the secrecy rate under individual power constraints. Further, we study the case with imperfect channel state information (CSI) for both CR and CJ. At last, extensive numerical results are provided.
ER -