1,721,035 research outputs found
Il recupero dell'immagine ambientale dei Campi Flegrei: metodologie e regole di intervento
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Paesaggio e ambiente costruito: modelli per il controllo della dinamica territoriale dei Campi Flegrei
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Paesaggio e ambiente costruito: modelli per il controllo della dinamica territoriale dei Campi Flegrei
No full textA New Discrete-Time Model for Channels Impaired by Phase Noise
No full textWe propose a novel discrete-time model for the phase noise signal, in case of free-running and phase-locked oscillators. In particular, we show how the PN can be described by an autoregressive process. The strength of the proposed model is that it can be easily expressed in terms of measurement parameters of practical oscillators. We then analyse the most common discrete-time phase noise channel model with reference to the measurement parameters and to the system bandwidth. The derived analytical models for the discrete-time phase noise signal can be used for the design of estimation/detection algorithms, for performance evaluation, or simply for fast simulations
A New Analytical Model of Phase Noise in Communication Systems
No full textWe consider the phase noise affecting communication systems, where local oscillators are employed to obtain a reference signal for frequency and phase synchronizations. We try to fill the gap between measurements and analytical models, in case of free-running and phase-locked oscillators. In particular, we propose a closed form expression for the power spectral density of the phase noise described by few parameters that are explicitly linked to the oscillator measurements. We also propose an analytical model for the oscillator power spectral density
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