Journal article

Physical-Layer Security in Full-Duplex Multi-Hop Multi-User Wireless Network With Relay Selection

Saman Atapattu, Nathan Ross, Yindi Jing, Yuanyuan He, Jamie S Evans

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | Published : 2019

Abstract

This paper investigates the relay selection (RS) problem for multi-hop full-duplex relay networks where multiple source-destination (SD) pairs compete for the same pool of relays, under the attack of multiple eavesdroppers. To enhance the physical-layer security, within a given coherence time, our objective is to jointly assign the available relays at each hop to different SD pairs to maximize the minimum secrecy rate among all pairs. Two RS schemes, optimal RS and suboptimal RS (SRS), are proposed for two-hop networks based on global channel state information (CSI) and only SD pairs CSI, respectively. Since all users can communicate within the same coherence time, our joint RS schemes are i..

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