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In this paper, we introduce a novel message hiding scheme for the purpose of authentication inside images. The hiding process is performed by means of insertion in the frequency domain of Discrete Cosine Transform. By employing a type of sequences with well-defined, low cross-correlation values to encode information, we were able to embed messages inside images. Furthermore, it is also possible to...
Owing to the zero non-trivial aperiodic correlation sum properties, complete complementary codes (CCC) have been applied to asynchronous multi-carrier code-division multiple-access (MC-CDMA) communications in order to provide zero interference performance. When each complementary code is arranged to be a matrix, the peak-to-mean envelope power ratio (PMEPR) of the CCC-MC-CDMA system is determined...
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