Proceedings ArticleDOI
Secrecy-Aware Jointly Optimal Transmit Power Budget Sharing and Trusted DF Relay Placement
TLDR
This paper presents a novel joint transmit power sharing and relay placement scheme for decode-and-forward relay assisted secure communication to a legitimate user in the presence of an untrusted user.Abstract:
Prominent requirements such as high data rate demands across weaker coverage areas have lead to the utilization of cooperative communication system in fifth generation (5G) networks. In this regard, this paper presents a novel joint transmit power sharing and relay placement scheme for decode-and-forward relay assisted secure communication to a legitimate user in the presence of an untrusted user. Observing that the joint secure rate maximization problem for the trusted user is non-convex, first we present key insights on optimal power sharing between source and relay, and then derive an equivalent single variable problem on relay placement. Next, tight analytical bounds for optimal relay placement are discoursed to ultimately come up with a computationally efficient joint global optimization algorithm. Lastly, the selected numerical results validate the analysis and highlight the substantial gains achieved by the proposed joint design over benchmark scheme.read more
Citations
More filters
Book ChapterDOI
Privacy-Aware Physical Layer Security Techniques for Smart Cities
Ravikant Saini,Deepak Mishra +1 more
TL;DR: This chapter introduces the physical layer architectures suitable for the IoT and discusses the technological challenges associated with them, and presents novel optimization techniques and smart green cooperative protocols for maximizing security.
References
More filters
Journal ArticleDOI
The Gaussian wire-tap channel
TL;DR: Wyner's results for discrete memoryless wire-tap channels are extended and it is shown that the secrecy capacity Cs is the difference between the capacities of the main and wire.tap channels.
Journal ArticleDOI
Improving Wireless Physical Layer Security via Cooperating Relays
TL;DR: Novel system designs are proposed, consisting of the determination of relay weights and the allocation of transmit power, that maximize the achievable secrecy rate subject to a transmit power constraint, or minimize the transmit powersubject to a secrecy rate constraint.
Book
Optimization Concepts and Applications in Engineering
TL;DR: 1. Preliminary concepts of one dimensional unconstrained minimization, unconstrained optimization, linear programming, and finite element based optimization are presented.
Journal ArticleDOI
Physical Layer Security for Next Generation Wireless Networks: Theories, Technologies, and Challenges
TL;DR: This survey introduces the fundamental theories of PHy-security, covering confidentiality and authentication, and provides an overview on the state-of-the-art works on PHY-security technologies that can provide secure communications in wireless systems, along with the discussions on challenges and their proposed solutions.
Posted Content
The Gaussian Wiretap Channel with a Helping Interferer
TL;DR: In this article, a Gaussian wire-tap channel with a helping interferer (WTC-HI) is considered in which a transmitter sends confidential messages to its intended receiver in the presence of a passive eavesdropper and with the help of an interferer.