Open AccessA Distributed Implementation Algorithm for Physical Layer Security Based on Untrusted Relay Cooperation and Artificial Noise
Author(s) -
Li Xiangyu,
Wang Xueming,
Xu Xiangyang,
Jin Liang
Publication year - 2014
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.14.0213.0090
Subject(s) - artificial noise , relay , node (physics) , computer science , physical layer , noise (video) , confidentiality , channel (broadcasting) , computer network , construct (python library) , channel state information , joint (building) , algorithm , layer (electronics) , distributed computing , wireless , computer security , telecommunications , engineering , artificial intelligence , power (physics) , architectural engineering , physics , image (mathematics) , chemistry , structural engineering , organic chemistry , quantum mechanics
In this letter, we consider a cooperation system with multiple untrusted relays (URs). To keep the transmitted information confidential, we obtain joint channel characteristics (JCCs) through combining the channels from the source to the destination. Then, in the null space of the JCCs, jammers construct artificial noise to confuse URs when the source node broadcasts its data. Through a distributed implementation algorithm, the weight of each node can be obtained from its own channel state information. Simulation results show that high‐level security of the system can be achieved when internal and external eavesdroppers coexist.