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In this paper, we proposed a modified chaotic based image encryption scheme using two logistic maps and two-dimensional baker map. In encryption process pixel, integration of diffusion and chaotic confusion are adopted. For pixel diffusion, we employed two-dimensional baker map to shuffle the positions of image pixels which can diffuse the relationship between the cipher-image and plain-image. Further,...
This paper proposes and analyzes the employment of Dual Golay Codes in the PSP-BOTDA system for the application of fiber optics distributed strain sensor. In the previous research, Golay codes generated through the complementary sequences method were used in PSP-BOTDA in order to improve its signal to noise ratio (SNR). There were four optical signals involved in order to analyze the typical Golay...
The demand for wireless communication has grown remarkably in the last year, consequently raising the problem of spectrum scarcity. In this context, cognitive radio is an emerging technology that aims to overcome that scarcity which is one of the most challenging problems in modern wireless communication. Among its fundamental function, the most important is the spectrum sensing which require precise...
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