Title :
STU-III secure bearer service option invocation reliability over enhanced IS-136 TDMA digital cellular ACELP IS-641 vocoder
Author :
Rahimta, D.J. ; Krebs, Ronald E. ; Zakar, Joseph D. ; Roberts, Steven W.
Author_Institution :
US Dept. of Defense, Ft. Meade, MD, USA
Abstract :
The U.S. Government is working with cellular/PCS standard bodies to develop bearer service option modes that will enable secure end-to-end digital voice between cellular handsets and existing STU-III (Secure Terminal Unit, 3rd generation) phones. A requirement is that handsets be able to reliably detect brief analog “go-secure” signaling sent by a STU-III as it attempts to transition from plain voice to encrypted voice mode, especially under conditions of fading errors. A simulation experiment is designed and conducted, demonstrating the feasibility of detecting such a proposed bearer option request under many environmental conditions
Keywords :
cellular radio; digital radio; fading; linear predictive coding; security of data; telecommunication network reliability; telecommunication signalling; telecommunication standards; telephone sets; time division multiple access; vocoders; STU-III secure bearer service option invocation reliability; Secure Terminal Unit 3rd generation phones; cellular handsets; encrypted voice mode; enhanced IS-136 TDMA digital cellular ACELP IS-641 vocoder; environmental conditions; fading errors; go-secure signaling; plain voice; secure end-to-end digital voice communication; Cellular phones; Cryptography; Digital modulation; Modems; Multiaccess communication; Presses; Telephone sets; Telephony; Time division multiple access; Vocoders;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.600410
