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Telfor Journal
2018, vol. 10, br. 2, str. 80-85
jezik rada: engleski
vrsta rada: neklasifikovan

Suitability of variance shift keying for real conditions
(naslov ne postoji na srpskom)
Ural Federal University, Engineering School of Information Technologies, Telecommunications and Control Systems, Yekaterinburg, Russian Federation



Project by Government of the Russian Federation, № 02.A03.21.0006 and project by Ministry of education and science of the Russian Federation, № 8.2538.2017/4.6.


(ne postoji na srpskom)
This paper investigates the possibility of real-life using the brand new type of digital modulation, which implies the transmission of white Gaussian noise whose variance changes in time. That modulation has been entitled as variance shift keying. The signals obtained on its basis have a high level of transmission security, and they even cannot be detected by standard means of matched filtering. However, the paper suggests the decision on how to process these signals at the receiver site. It is proposed to use a specially developed optimal receiver, whose restoration quality appears to be better in comparison with the conventional cumulative receiver. The digital simulation of propagation in frequency selective media has shown the signal with variance shift keying is possible to be used in real conditions since its distribution of instantaneous amplitudes remains Gaussian.

Ključne reči

cumulative receiver; free space propagation; inconstant variance; matched filter; optimal receiver; signal hiding; signal interception; variance shift keying; white Gaussian noise


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