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Добірка наукової літератури з теми "Radio à bande latérale unique"
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Статті в журналах з теми "Radio à bande latérale unique"
Santibáñez Vásquez, José Daniel, Natalie Barragán, Natalie Barragán, Christopher Andrade, Christopher Andrade, Antonella Aguirre, and Antonella Aguirre. "Análisis de la estética y la narrativa secuencial de la tira cómica el llanero solitario, publicada entre 1981 y 1984, e ilustrada por Russe." CALLE14: revista de investigación en el campo del arte 11, no. 18 (October 4, 2016): 116. http://dx.doi.org/10.14483/udistrital.jour.c14.2016.1.a09.
Повний текст джерелаДисертації з теми "Radio à bande latérale unique"
Vergnol, Eric. "Convertisseur millimétrique optique à bande latérale unique pour le transport radio sur fibre." Brest, 1999. http://www.theses.fr/1999BRES2032.
Повний текст джерелаVourc'H, Eric. "Filtre optique à bande latérale unique auto-accordable pour les systèmes hybrides fibre-radio." Phd thesis, Université de Bretagne occidentale - Brest, 2002. http://tel.archives-ouvertes.fr/tel-00817878.
Повний текст джерелаVourc'h, Éric. "Filtre optique à bande latérale unique auto-accordable pour les systèmes hybrides fibre radio." Brest, 2002. http://www.theses.fr/2002BRES2020.
Повний текст джерелаFirst, we describe the concept of a WST-SSB filter. This is based on dynamic Bragg gratings generated inside an InP:Fe photorefractive crystal. The device's input signal is an optical carrier modulated at a radio frequency (RF) whose spectrum is double sideband (DSB). The gratings filter this DSB signal into a single sideband signal (SSB). In addition, since the DSB input signal controls the device by generating the dynamic Bragg gratings itself, the filter is wavelength-self-tunable. Second, we propose a model for the spectral response of a WST-SSB filter. Third, devices are built and characterized at both microwave and millimeter-wave frequencies. The results of these experiments confirm the filter's principle and experimental data are in good agreement with simulations. In addition, the compensation of chromatic dispersion effects is achieved thanks to WST-SSB filters. These validations are obtained by using SSB signals corresponding to 16 GHz as well as 31,5 GHz RF modulated input DSB signals. Finally, hybrid fiber-radio experiments implementing a WST-SSB filter result in eye diagram and bit error rate measurements that prove good transmission performance
Kasan, Karim. "Performance of a new single sideband (SSB) continuous phase modulation (CPM)." Thesis, CentraleSupélec, 2021. http://www.theses.fr/2021CSUP0010.
Повний текст джерелаIn this PhD thesis, we investigate the single-sideband frequency shift keying (SSB-FSK), a continuous phase modulation (CPM) scheme having, by essence, the original feature of the single-sideband (SSB) spectrum. First, we present the origin of the signal from quantum physics. Then, we propose a simplified Maximum likelihood sequence detection (MLSD) detector for conventional CPM schemes based on the rearrangement shown in the SSB-FSK signal model. To fully exploit the SSB-FSK performance, we examine the signal error probability, bandwidth occupancy, and receiver complexity. Since different performance metrics are considered, we employed a multi-objective optimization to achieve new SSB-FSK schemes that outperform conventional CPM schemes. Moreover, we propose a solution to simplify the complexity of SSB-FSK signals using the pulse amplitude modulation (PAM) decomposition. The PAM pulses were achieved from an algorithm we developed. Furthermore, we offer an optimum generic training sequence for the joint estimation of symbol timing, frequency offset, and carrier phase for burst mode synchronization. The training sequence was obtained using the Cramér-Rao bounds
Soujaeff, Alexandre. "Cryptage quantique à bande latérale unique et méthode d'autocompensation longue distance par multiplexage en longueur d'onde." Besançon, 2003. http://www.theses.fr/2003BESA2042.
Повний текст джерелаWe have developed a cryptographic key transmission system involving phase modulation in single sideband of modulated light operational on optical fiber at 1550nm. The security of a quantum cryptographic system depends of the protocol and of the experimental parameters. For a given set of these parameters, we have calculated the limit for transmission distance. We have conceived a photon detection system using a cooled avalanche photodiode operated in Geiger mode. The key transmission system has been studied both in theory and experimentally. Fluctuation of fiber index causes variation of the system visibility. We conceived a synchronization system to overcome these fluctuations and also allowing full temporal synchronization between emitter and receiver. A key transmission over 40 km of fiber was realized in the laboratory