Title :
Non-systematic codes for physical layer security
Author :
Baldi, Marco ; Bianchi, Marco ; Chiaraluce, Franco
Author_Institution :
DIBET, Polytech. Univ. of Marche, Ancona, Italy
fDate :
Aug. 30 2010-Sept. 3 2010
Abstract :
This paper is a first study on the usage of non-systematic codes based on scrambling matrices for physical layer security. The chance of implementing transmission security at the physical layer is known since many years, but it is now gaining an increasing interest due to its several possible applications. It has been shown that channel coding techniques can be effectively exploited for designing physical layer security schemes, in such a way that an unauthorized receiver, experiencing a channel different from that of the authorized receiver, is not able to gather any information. Recently, it has been proposed to exploit puncturing techniques in order to reduce the security gap between the authorized and unauthorized channels. In this paper, we show that the security gap can be further reduced by using non-systematic codes, able to scramble information bits within the transmitted codeword.
Keywords :
channel coding; matrix algebra; telecommunication security; authorized channels; channel coding techniques; nonsystematic codes; physical layer security schemes; puncturing techniques; scrambling matrices; transmission security; unauthorized channels; Encoding; Error probability; Parity check codes; Physical layer; Security; Signal to noise ratio; Systematics;
Conference_Titel :
Information Theory Workshop (ITW), 2010 IEEE
Conference_Location :
Dublin
Print_ISBN :
978-1-4244-8262-7
Electronic_ISBN :
978-1-4244-8263-4
DOI :
10.1109/CIG.2010.5592833