Title :
Secure Chaos Communications Using Driven Traveling Wave Tube Amplifiers with Delayed Feedback
Author :
Larsen, P.B. ; Earley, L.M. ; Carlsten, B.E. ; Wheat, R.M. ; Booske, J.H.
Author_Institution :
Los Alamos Nat. Lab.
Abstract :
A new method of RF communications with inherent security has been demonstrated at Los Alamos using chaos masking. In the past several years many papers have described this secure chaos concept theoretically but LANL has the first operating prototype communications system. This chaos communications method is similar to spread spectrum techniques. The chaos masking of a transmitted signal is created by operating a non-linear amplifier (TWT) in saturation with controlled feedback. The system receiver uses an identical TWT that de-codes the chaos masking similar to the correlation methods of a spread spectrum receiver
Keywords :
chaotic communication; feedback; spread spectrum communication; telecommunication security; travelling wave amplifiers; travelling wave tubes; LANL; Los Alamos; chaos communications method; chaos masking; delayed feedback; driven traveling wave tube amplifiers; radiofrequency communications; secure chaos communications; spread spectrum receiver; spread spectrum techniques; system receiver; transmitted signal; Chaotic communication; Communication system control; Communication system security; Communication systems; Feedback; Propagation delay; Prototypes; Radio frequency; Radiofrequency amplifiers; Spread spectrum communication; TWT; chaos; secure communications;
Conference_Titel :
Vacuum Electronics Conference, 2006 held Jointly with 2006 IEEE International Vacuum Electron Sources., IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
1-4244-0108-9
DOI :
10.1109/IVELEC.2006.1666412
