Cooperative secrecy transmission in multi‐hop relay networks with interference alignment. Issue 10 (1st June 2019)

• Record Type: Journal Article
• Authors: Chen, Zhuo; Hadley, Lucinda; Ding, Zhiguo; Dai, Xuchu
• Is Part Of: IET communications. Volume 13:Issue 10(2019)
• Page Start: 1379
• Page End: 1389
• Publication Date: 2019-06-01
• Subjects: cooperative communication -- matrix algebra -- telecommunication security -- probability -- radio networks -- radiofrequency interference -- eigenvalues and eigenfunctions -- diversity reception -- protocols -- relay networks (telecommunication) -- antenna arrays -- decode and forward communication -- amplify and forward communication; AF protocol -- amplify‐and‐forward mode -- diversity order -- legitimate outage probability -- unit variance -- zero mean -- independent identically distributed complex Gaussian variables -- decode‐and‐forward relaying protocol -- cooperative secrecy transmission -- DF relaying protocol -- source‐destination pair -- multihop relay networks -- complex Wishart matrices -- secrecy communication -- interference alignment -- joint probability density function; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2018.5170
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : 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, …, k th ( k = 1, 2, … ) largest eigenvalues of the complex Wishart matrices H H H, where 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.