Earticle

초록

영어

In this paper, a multicast network in the presence of an untrusted relay is investigated. A three-phase AF-based cooperative jamming with power allocation is proposed to enhance the system secrecy rate. Based on time division based cooperative multicast (TDCM) protocol, the source uses part of its available power to broadcast pre-defined jamming signals in order to create interference at the untrusted relay, while the relay amplifies the linearly combined two received signals and then re-transmits it to the destination. Optimum power allocation policy involving the allocation between the information and jamming signals at the source and between two combined signal factors at the relay to maximize the achievable worse secrecy rate or sum-rate are derived and analyzed. Numerical results are provided to demonstrate our analytical results and reveal that compared with the two benchmarks schemes, the proposed scheme can obtain significantly higher positive secrecy rate for the same transmit power budget, especially in the case of maximizing secrecy sum-rate.

목차

Abstract
 1. Introduction
 2. System Model and Protocol Design
 3. Power Allocation for Achievable Secrecy Rate Maximization
 4. Numerical Results
 5. Conclusions
 References

키워드

저자

• Xingqun Fu [ Department of Electronic Information Engineering, Nanchang University, Nanchang, China ]
• An Li [ Department of Electronic Information Engineering, Nanchang University, Nanchang, China ]
• Panagiotis G Sarigiannidis [ Department of Informatics and Telecommunications Engineering, University of Western Macedonia, Kozani, Greece ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605