Title :
Wireless physical-layer security: The case of colluding eavesdroppers
Author :
Pinto, Pedro C. ; Barros, João ; Win, Moe Z.
Author_Institution :
Lab. for Inf. & Decision Syst. (LIDS), Massachusetts Inst. of Technol., Cambridge, MA, USA
fDate :
June 28 2009-July 3 2009
Abstract :
We consider the fundamental security limits of stochastic wireless networks in the presence of colluding eavesdroppers. By establishing a direct connection with the single-input multiple-output (SIMO) Gaussian wiretap channel, we are able to provide a complete characterization of the secrecy capacity for the case in which the eavesdroppers are scattered according to a spatial Poisson process. Our analysis, which includes the probabilities of existence and outage of secrecy capacity, helps clarify how the spatial density of eavesdroppers can jeopardize the success of wireless physical-layer security based on information-theoretic principles.
Keywords :
Gaussian channels; information theory; radio networks; telecommunication security; SIMO Gaussian wiretap channel; colluding eavesdropper; information-theoretic principle; secrecy capacity; security limits; single-input multiple-output channel; spatial Poisson process; stochastic wireless network; wireless physical-layer security; Capacity planning; Channel capacity; Communication system security; Fading; Information analysis; Information security; Scattering; Stochastic processes; Wireless networks; Wireless sensor networks; Information-theoretic security; colluding eavesdroppers; secrecy capacity; stochastic geometry; wireless channels;
Conference_Titel :
Information Theory, 2009. ISIT 2009. IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-4312-3
Electronic_ISBN :
978-1-4244-4313-0
DOI :
10.1109/ISIT.2009.5206050
