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In this paper, a new technique to design signals for secure communications is proposed, which provides data securing at the physical layer in noncooperative environments. Specifically, the proposed technique does not allow to an unauthorized third party the discovery of the modulation format and, hence, the demodulation of the signal. The technique consists in generating signals whose time-averaged...
In this paper, the mathematical foundation of the functional (or nonstochastic) approach for signal analysis is established. The considered approach is alternative to the classical one that models signals as realizations of stochastic processes. The work follows the fraction-of-time probability approach introduced by Gardner. By applying the concept of relative measure used by Bochner, Bohr, Haviland,...
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