NDLI: Cooperative jamming polar codes for multiple-access wiretap channels

Content Provider	IET Digital Library
Author	Hajimomeni, Mona Aghaeinia, Hassan Kim, Il Min Kim, Kwihoon
Abstract	The authors study cooperative security in the physical layer of wireless systems based on the recently developed polar codes for multiple access channel (MAC). Specifically, the authors first consider the case of a m-user MAC with external eavesdropper. Using polar alignment, the authors formulate a discrete optimisation problem where security and reliability criteria can be handled separately over the bases of a set of deterministic binary matrices. A discrete algorithm with incrementally polynomial complexity is used to maximise the uniform sum secrecy rate of users. Moreover, the proposed coding scheme is shown to achieve strong security for any subset of users. The authors next examine the case of minimum number of cooperative helpers to fulfil a feasible secrecy rate requirement at the legitimate user. Here, a low-complexity suboptimal algorithm is presented with at most one helper more than the optimal solution. Using Tal–Sharov–Vardy implementation of MAC polar codes, secure polar coding is implemented for a 2-user Gaussian wiretap MAC channel. The upper and lower bound of block error probability are compared, respectively, at the legitimate receiver and the eavesdropper. The results demonstrate clearly that with sufficiently long block length, strong secrecy with respect to the eavesdropper is achieved, while block error probability approaches 0.5.
Starting Page	407
Ending Page	415
Page Count	9
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 4, Mar (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0624
Journal	IET Communications
Publisher Date	2016-03-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	2-user Gaussian Wiretap MAC Channel Algebra Block Error Probability Channel Coding Code Computational Complexity Cooperative Communication Cooperative Jamming Polar Codes Cooperative Security Deterministic Binary Matrices Discrete Optimisation Problem Error Statistics External Eavesdropper Gaussian Channel Legitimate Receiver Low-complexity Suboptimal Algorithm Lower Bound M-user MAC Matrix Algebra Multi-access System Multiple Access Channel Multiple Access Communication Multiple-access Wiretap Channel Multiuser Channel Optimisation Optimisation Technique Polar Alignment Polynomial Complexity Radio Link And Equipment Reliability Reliability Criteria Statistics Tal–Sharov–Vardy Implementation Telecommunication Network Reliability Telecommunication Security Uniform Sum Secrecy Rate Maximization Upper Bound Wireless System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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