Buffer-Aided Relay Selection for Physical-Layer Security in Wireless Networks
Conference: WSA 2015 - 19th International ITG Workshop on Smart Antennas
03/03/2015 - 03/05/2015 at Ilmenau, Deutschland
Proceedings: WSA 2015
Pages: 5Language: englishTyp: PDF
Personal VDE Members are entitled to a 10% discount on this title
Authors:
Lu, Xiaotao; Lamare, Rodrigo C. de (Communications Research Group, Department of Electronics, University of York, YO10 5DD York, UK)
Lamare, Rodrigo C. de (CETUC, PUC-Rio, Brazil)
Abstract:
In this work, we consider the use of buffer-aided relays, linear precoding techniques and multiple antennas for physical-layer security in wireless networks. We develop relay selection algorithms to improve the secrecy-rate performance of cooperative multi-user multiple-antenna wireless networks. In particular, we propose a novel finite buffer-aided relay selection algorithm that employs the maximum likelihood (ML) criterion to select sets of relays which fully exploit the flexibility offered by relay nodes equipped with buffers. Numerical results show the benefits of the proposed techniques as compared to prior art.