RT Journal Article
ID 5f1a23eb09b0bf59
A1 Kukush, V. D. 
A1 Verchik, D. Yu. 
T1 ESTIMATION OF THE EFFICIENCY OF APPLICATION OF BAND SCRAMBLERS FOR VOICE INFORMATION PROTECTION IN THE NARROWBAND TELECOMMUNICATION SYSTEMS
JF Telecommunications and Radio Engineering
JO TRE
YR 2018
FD 2018-06-26
VO 77
IS 9
SP 817
OP 830
K1 telecommunications
K1 voice information scrambler
K1 fast Fourier transform
K1 digital filter
AB The advantages of using scramblers in the narrow-band voice communication systems are considered and a detailed analysis of strength to hacking of communication channels secured by frequency-domain scrambling technique is given. The effect of the number and order of permutation of the bands on the residual legibility of the scrambled signal is investigated. A description is also given of the developed algorithm for digital signal processing, which realizes the function of the band scrambler in the frequency domain and does not require synchronization between the scrambler and the descrambler. 
PB Begell House
LK https://www.dl.begellhouse.com/journals/0632a9d54950b268,17a5a6fe5602bcef,5f1a23eb09b0bf59.html