TY - JOUR

T1 - Cooperative secrecy transmission in multi-hop relay networks with interference alignment

AU - Chen, Z.

AU - Hadley, L.

AU - Ding, Z.

AU - Dai, X.

PY - 2019/6/25

Y1 - 2019/6/25

N2 - In this study, the authors consider the secrecy communication of one source-destination pair in a wireless multi-hop relay network, where each node is equipped with multiple antennas. They use the method of interference alignment for secrecy transmission in the presence of an eavesdropper. Firstly, they propose a decode-and-forward (DF) relaying protocol and give a new result on the joint probability density function of the first, second, horizontal ellipsis , kth ($k=1, 2,\ldots $k=1,2, horizontal ellipsis ) largest eigenvalues of the complex Wishart matrices $\boldsymbol{H} \boldsymbol{H}H$HHH, where $\boldsymbol{H}$H is an matrix whose elements are independent identically distributed complex Gaussian variables with zero mean and unit variance. They then utilise this result to characterise the legitimate outage probability and the diversity order of the proposed DF protocol. The case where the relay works in the amplify-and-forward (AF) mode is considered at last, and the diversity order of the proposed AF protocol is given.

AB - In this study, the authors consider the secrecy communication of one source-destination pair in a wireless multi-hop relay network, where each node is equipped with multiple antennas. They use the method of interference alignment for secrecy transmission in the presence of an eavesdropper. Firstly, they propose a decode-and-forward (DF) relaying protocol and give a new result on the joint probability density function of the first, second, horizontal ellipsis , kth ($k=1, 2,\ldots $k=1,2, horizontal ellipsis ) largest eigenvalues of the complex Wishart matrices $\boldsymbol{H} \boldsymbol{H}H$HHH, where $\boldsymbol{H}$H is an matrix whose elements are independent identically distributed complex Gaussian variables with zero mean and unit variance. They then utilise this result to characterise the legitimate outage probability and the diversity order of the proposed DF protocol. The case where the relay works in the amplify-and-forward (AF) mode is considered at last, and the diversity order of the proposed AF protocol is given.

KW - Bandwidth

KW - Complex networks

KW - Eigenvalues and eigenfunctions

KW - Relay control systems

KW - Amplify-and-forward

KW - Decodeandforward relaying

KW - Interference alignment

KW - Joint probability density function

KW - Largest eigenvalues

KW - Multi-hop relay networks

KW - Secrecy communications

KW - Source-destination pairs

KW - Probability density function

U2 - 10.1049/iet-com.2018.5170

DO - 10.1049/iet-com.2018.5170

M3 - Journal article

VL - 13

SP - 1379

EP - 1389

JO - IET Communications

JF - IET Communications

SN - 1751-8628

IS - 10

ER -