NDLI: Covert communication using skewed α-stable distributions

Content Provider	IET Digital Library
Author	Cek, M. E.
Abstract	A covert communication system using a random carrier having skewed α-stable distribution is introduced. The proposed method utilises the random signals with skewed α-stable distributions exhibiting antipodal characteristics to encode the binary information at the transmitter. The receiver recovers these positive and negative skewed α-stable distributed random signals by switching at different time instants, where only the receiver has the correct switching order. The third-order statistic, given as sample skewness, is used to determine the message inside the receiver structure. The main purpose of constructing such a communication system is to improve the security aspect by avoiding the self-repeating autocorrelation behaviour of the transmitted signal in the time domain. The improvement of security is shown by comparing the fractional lower-order covariance with the reference study. According to the bit error rate results, the proposed method also shows better performance when the impulsiveness of the random carrier having skewed stable distribution is increased.
Starting Page	116
Ending Page	118
Page Count	3
ISSN	00135194
Volume Number	51
e-ISSN	1350911X
Issue Number	Issue 1, Jan (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/51/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.3323
Journal	Electronics Letters
Publisher Date	2014-12-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	BER Binary Information Bit Error Rate Computer Network And Technique Covert Communication System Data Security Digital Communication Digital Signal Processing Error Statistics FLOC Fractional Lower-order Covariance Higher Order Statistics Random Carrier Random Signal Signal Processing Signal Processing And Detection Skewed Α-stable Distributions Statistics Telecommunication Application Telecommunication Security Third-order Statistic
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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