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2 results on '"inconstant variance"'

1. Suitability of Variance Shift Keying for Real Conditions

Author

R. I. Sokolov and R. R. Abdullin

Subjects
NULLcumulative receiver, free space propagation, inconstant variance, matched filter, optimal receiver, signal hiding, signal interception, variance shift keying, white Gaussian noise, Telecommunication, TK5101-6720
Abstract

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.

Published
2018
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2. Suitability of variance shift keying for real conditions

Author

I Rostislav Sokolov and Renat R. Abdullin

Subjects
INCONSTANT VARIANCE, Computer Networks and Communications, Computer science, matched filter, lcsh:Telecommunication, SIGNAL INTERCEPTION, NULLcumulative receiver, lcsh:TK5101-6720, Statistics, Media Technology, variance shift keying, signal interception, signal hiding, white Gaussian noise, Radiation, MATCHED FILTER, WHITE GAUSSIAN NOISE, VARIANCE SHIFT KEYING, optimal receiver, inconstant variance, FREE SPACE PROPAGATION, Keying, Variance (accounting), OPTIMAL RECEIVER, free space propagation, CUMULATIVE RECEIVER, Signal Processing, SIGNAL HIDING, Software
Abstract

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. © 2018 Academic Mind. The work was supported by Act 211 Government of the Russian Federation, contract № 02.A03.21.0006. The research was executed by the grant of the Ministry of education and science of the Russian Federation (project № 8.2538.2017/4.6).

Published
2018

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