Title :
A Secure Multiple-Access Scheme for Rechargeable Wireless Sensors in the Presence of an Eavesdropper
Author :
El Shafie, Ahmed ; Al-Dhahir, Naofal
Author_Institution :
Electr. Eng. Dept., Univ. of Texas at Dallas, Richardson, TX, USA
Abstract :
We propose a simple yet efficient scheme for a set of energy-harvesting sensors to establish secure communication with a common destination (a master node). An eavesdropper attempts to decode the data sent from the sensors to their common destination. We assume a single modulation scheme that can be implemented efficiently for energy-limited applications. We design a multiple-access scheme for the sensors under secrecy and limited-energy constraints. In a given time slot, each energy-harvesting sensor chooses between sending its packet or remaining idle. The destination assigns a set of data time slots to each sensor. The optimization problem is formulated to maximize the secrecy sum-throughput.
Keywords :
energy harvesting; multi-access systems; optimisation; telecommunication security; wireless sensor networks; eavesdropper; energy-harvesting sensors; energy-limited applications; master node; modulation scheme; optimization problem; rechargeable wireless sensors; secrecy sum-throughput; secure communication; secure multiple-access scheme; Batteries; Communication system security; Fading; Resource management; Sensors; Wireless communication; Wireless sensor networks; Energy harvesting; eavesdropper; fading channels; secrecy sum-throughput;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2418206
