Coding techniques for multi-user physical layer security

Pierrot, Alexandre Jean Louis J.

Title:

Coding techniques for multi-user physical layer security

dc.contributor.advisor	Bloch, Matthieu R.
dc.contributor.author	Pierrot, Alexandre Jean Louis J.
dc.contributor.committeeMember	Weitnauer, Mary Ann
dc.contributor.committeeMember	Feron, Eric
dc.contributor.committeeMember	McLaughlin, Steven W.
dc.contributor.committeeMember	Barry, John R.
dc.contributor.department	Electrical and Computer Engineering
dc.date.accessioned	2015-09-21T14:23:08Z
dc.date.available	2015-09-21T14:23:08Z
dc.date.created	2015-08
dc.date.issued	2015-07-14
dc.date.submitted	August 2015
dc.date.updated	2015-09-21T14:23:08Z
dc.description.abstract	The fast development of wireless networks, which are intrinsically exposed to eavesdropping, has created a growing concern for confidentiality. While classical cryptographic schemes require a key provided by the end-user, physical-layer security leverages the randomness of the physical communication medium as a source of secrecy. The main benefit of physical-layer security techniques is their relatively low cost and their ability to combine with any existing security mechanisms. This dissertation provides an analysis including the theoretical study of the two-way wiretap channel to obtain a better insight into how to design coding mechanisms, practical tests with experimental systems, and the design of actual codes. From a theoretical standpoint, the study confirms the benefits of combining several multi-user coding techniques including cooperative jamming, coded cooperative jamming and secret key generation. For these different mechanisms, the trade-off between reliability, secrecy and communication rate is clarified under a stringent strong secrecy metric. Regarding the design of practical codes, spatially coupled LDPC codes, which were originally designed for reliability, are modified to develop a coded cooperative jamming code. Finally, a proof-of-principle practical wireless system is provided to show how to implement a secret key generation system on experimental programmable radios. This testbed is then used to assess the realistic performance of such systems in terms of reliability, secrecy and rate.
dc.description.degree	Ph.D.
dc.format.mimetype	application/pdf
dc.identifier.uri	http://hdl.handle.net/1853/53836
dc.language.iso	en_US
dc.publisher	Georgia Institute of Technology
dc.subject	Physical layer security
dc.subject	Cooperative jamming
dc.subject	Secret key generation
dc.subject	Resolvability
dc.subject	Strong secrecy
dc.subject	Two-way wiretap channel
dc.subject	Multi-user security
dc.title	Coding techniques for multi-user physical layer security
dc.type	Text
dc.type.genre	Dissertation
dspace.entity.type	Publication
local.contributor.advisor	Bloch, Matthieu R.
local.contributor.corporatename	School of Electrical and Computer Engineering
local.contributor.corporatename	College of Engineering
relation.isAdvisorOfPublication	d929b8f6-f25d-4a74-8ba6-cf69760b7c61
relation.isOrgUnitOfPublication	5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication	7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level	Doctoral