Littérature scientifique sur le sujet « Modulation discrète »
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Articles de revues sur le sujet "Modulation discrète"
Nofal, Abdul-Nasser, Abdel-Nasser Assimi et Yasser M. Jaamour. « Joint Power Allocation and Bit-Loading for Multicarrier Systems with Discrete Modulation ». Mathematical Modelling of Engineering Problems 8, no 4 (31 août 2021) : 626–34. http://dx.doi.org/10.18280/mmep.080416.
Texte intégralJAMES, GUILLAUME. « NONLINEAR WAVES IN NEWTON'S CRADLE AND THE DISCRETE p-SCHRÖDINGER EQUATION ». Mathematical Models and Methods in Applied Sciences 21, no 11 (novembre 2011) : 2335–77. http://dx.doi.org/10.1142/s0218202511005763.
Texte intégralZhang, Hao Chi, Tie Jun Cui, Yu Luo, Jingjing Zhang, Jie Xu, Pei Hang He et Le Peng Zhang. « Active digital spoof plasmonics ». National Science Review 7, no 2 (4 octobre 2019) : 261–69. http://dx.doi.org/10.1093/nsr/nwz148.
Texte intégralAli, Weaam Talaat. « Performance of Discrete Wavelet Transform Based on OFDM with Adaptive Modulation ». International Journal of Engineering Research 4, no 8 (1 août 2015) : 419–25. http://dx.doi.org/10.17950/ijer/v4s8/804.
Texte intégralZheleznjak, V. K., S. V. Lavrov, M. M. Baranouski et A. G. Filipovich. « Mathematical model of speech signal leakage channels during discrete-quantified conversion ». Doklady BGUIR 18, no 4 (25 juin 2020) : 89–95. http://dx.doi.org/10.35596/1729-7648-2020-18-4-89-95.
Texte intégralZhou, Shiyi, Zhijun Zhang, Chuliang Zhou, Zhongpeng Li, Ye Tian et Jiansheng Liu. « A high-energy electron density modulator driven by an intense laser standing wave ». Laser and Particle Beams 37, no 2 (30 avril 2019) : 197–202. http://dx.doi.org/10.1017/s0263034619000338.
Texte intégralXuhong Chu, Xuhong Chu, Liquan Dong Liquan Dong, Yuejin Zhao Yuejin Zhao, Xiaomei Yu Xiaomei Yu et and Yun Feng and Yun Feng. « Optical readout method based on time-discrete modulation for micro-cantilever array sensing ». Chinese Optics Letters 14, no 10 (2016) : 101102–6. http://dx.doi.org/10.3788/col201614.101102.
Texte intégralВоловач, В. И. « Mathematical modeling of the correlation function and the energy spectra of the noise modulation function ». Informacionno-technologicheskij vestnik, no 1(27) (15 mars 2021) : 77–92. http://dx.doi.org/10.21499/2409-1650-2021-27-1-77-92.
Texte intégralSeetha, S., D. P. Sharma, V. N. Padmini, T. M. K. Marar, K. Kasturirangan, U. R. Rao et J. C. Bhattacharyya. « Periodic Modulations in the Optical Light Curves of EX Hydrae ». International Astronomical Union Colloquium 93 (1987) : 193–96. http://dx.doi.org/10.1017/s0252921100104853.
Texte intégralZeng, Zhiyong, Xiaoliang Jin et Rongxiang Zhao. « Small-signal discrete-time modeling of digitally controlled three-phase PWM boost rectifier under balanced voltage ». COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no 1 (3 janvier 2017) : 18–47. http://dx.doi.org/10.1108/compel-03-2016-0113.
Texte intégralThèses sur le sujet "Modulation discrète"
Tabaa, Mohamed. « Conception d'un système de transmission ultra-large bande par impulsions orthogonales ». Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0375/document.
Texte intégralIn this thesis, we propose a design methodology for communication architectures dedicated to wireless sensor network based on impulse radio techniques for UWB communications. The impulse technique proposed in this work relies on pulse shape modulation. The architecture design approach proposed in this thesis focuses on pulses shape and their generation, which is of major interest as it constitutes the carrier of the information exchanged. The study on the choice of pulse shape led us to propose two different architectures. The first one is based on orthogonal polynomials, more especially on the Hermite polynomials, for impulse generation, and on a correlation architecture for detection and recognition of transmitted impulses. The second architecture is based on discrete wavelet packet transform and can be used according two different modes, mono and multi-users. The use of both synthesis and analysis architectures for emitter and receiver, respectively, offers a new way for digital communications and allows the wavelet transform to ensure the impulses generation on the transmitter and their recognition on the receiver. A major interest point of the proposed technique is to facilitate the multi-users access to the ultra-wideband channel and to allow simultaneous communications (many-to-one, from the sensors to the sink) or broadcast (one-to-many, from the coordinator to the nodes) but without overloading the MAC layer. Hence, the proposed architecture is part of the interface between both PHY and MAC layers, and allows to release their specific design constraints
Fang, Yi-chin. « Performance evaluation of discrete IR optical system ». Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270211.
Texte intégralBengtsson, Daniel, et Daniel Landström. « Coding in a discrete multitone modulation system ». Thesis, Luleå, 1996. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-62422.
Texte intégralJenkin, Robin Brian. « On the application of the modulation transfer function to discrete imaging systems ». Thesis, University of Westminster, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251647.
Texte intégralForbes, Jason. « Discrete signal processing techniques for power converters : multi-carrier modulation and efficient filtering techniques ». Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45446.
Texte intégralKuznetsov, Nikita A. « Modulation and Coordination of Respiratory Rhythm with Discrete Finger Movements in Manual Precision Aiming ». University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1291407910.
Texte intégralSmecher, Graeme. « Discrete-time crossing-point estimation for switching power converters ». Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115995.
Texte intégralFor example, an audio amplifier typically receives its input from a digital source decoded into regular samples (e.g. from MP3, DVD, or CD audio), or obtained from a continuous-time signal using an analog-to-digital converter (ADC). In a switching amplifier based on Pulse-Width Modulation (PWM) or Click Modulation (CM), a signal derived from the sampled audio is compared against a deterministic reference waveform; the crossing points of these signals control a switching power stage. Crossing-point estimates must be accurate in order to preserve audio quality. They must also be simple to calculate, in order to minimize processing requirements and delays.
We consider estimating the crossing points of a known function and a Gaussian random process, given uniformly-spaced, noisy samples of the random process for which the second-order statistics are assumed to be known. We derive the Maximum A-Posteriori (MAP) estimator, along with a Minimum Mean-Squared Error (MMSE) estimator which we show to be a computationally efficient approximation to the MAP estimator.
We also derive the Cramer-Rao bound (CRB) on estimator variance for the problem, which allows practical estimators to be evaluated against a best-case performance limit. We investigate several comparison estimators chosen from the literature. The structure of the MMSE estimator and comparison estimators is shown to be very similar, making the difference in computational expense between each technique largely dependent on the cost of evaluating various (generally non-linear) functions.
Simulations for both Pulse-Width and Click Modulation scenarios show the MMSE estimator performs very near to the Cramer-Rao bound and outperforms the alternative estimators selected from the literature.
Pham, Dang Kien Germain. « Conversion analogique-numérique Sigma-Delta large bande appliquée à la mesure des non-linéarités des amplificateurs de puissance ». Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0003/document.
Texte intégralPower amplifiers, which are essential elements of any communication system, will play a crucial role in the development of future communication systems. Today improving power amplifiers requires technological advances at the circuit device level, but one also must consider a more global approach. In particular, advances in digital processing can now correct in the early stage of the communication chain some distortions that are generated downstream in the chain. Digital pre-distortion is a correction technique for power amplifiers that has a growing interest because of its completely digital implementation and of its gains in linearity and energy consumption. This technique requires a feedback path where the analog-to-digital converter is a critical element. This component must satisfy the constraints of high resolution , wide bandwidth, and high linearity. In this thesis, we propose a new architecture of analog-to-digital converter based on bandpass Delta-Sigma modulators. This architecture takes advantage of operating bandpass modulators that are designed to work in parallel, each focusing on different frequencies, but also of a particular cascading arrangement to eliminate the useful signal, which has a high power, in order to reduce dynamics constraints. High-level design and simulations were carried out for discrete time and continuous time systems and also required the development of appropriate simulation tools
Nathany, Sumit Kumar. « Design of a 14-bit fully differential discrete time delta-sigma modulator / ». Online version of the thesis, 2006. https://ritdml.rit.edu/dspace/handle/1850/2799.
Texte intégralQu, Zhen, et Ivan B. Djordjevic. « Four-Dimensionally Multiplexed Eight-State Continuous-Variable Quantum Key Distribution Over Turbulent Channels ». IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2017. http://hdl.handle.net/10150/626439.
Texte intégralLivres sur le sujet "Modulation discrète"
Berber, Stevan. Discrete Communication Systems. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198860792.001.0001.
Texte intégralEdwards, Michael, John Kitchen, Nikki Moran, Zack Moir et Richard Worth. Fundamentals of Music Theory. The University of Edinburgh, 2021. http://dx.doi.org/10.2218/ed.9781912669226.
Texte intégralChapitres de livres sur le sujet "Modulation discrète"
Pelgrom, Marcel J. M. « Time-Discrete Σ Δ Modulation ». Dans Analog-to-Digital Conversion, 861–908. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-90808-9_19.
Texte intégralCoene, Wim, et Andre Immink. « Modulation coding for a two-dimensional optical storage channel ». Dans DIMACS Series in Discrete Mathematics and Theoretical Computer Science, 1–21. Providence, Rhode Island : American Mathematical Society, 2008. http://dx.doi.org/10.1090/dimacs/073/01.
Texte intégralArad, Nur, Eytan Ruppin et Yehezkel Yeshurun. « Dopaminergic Modulation and Neural Fatigue in Discrete Time Sigmoidal Networks ». Dans Computation and Neural Systems, 369–74. Boston, MA : Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3254-5_56.
Texte intégralCheng, Jung-Fu. « Performance of MIMO Space-Time Coding with Discrete Modulations ». Dans Information, Coding and Mathematics, 165–81. Boston, MA : Springer US, 2002. http://dx.doi.org/10.1007/978-1-4757-3585-7_11.
Texte intégralShen, Qi, Weiyin Wang et Xiaofeng Gu. « Design of Hybrid Continuous-Time/Discrete-Time ΣΔ Modulator ». Dans Lecture Notes in Electrical Engineering, 1725–32. New York, NY : Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-4981-2_189.
Texte intégralSandnas, Matt, et David B. Spencer. « A NEW GUIDANCE TECHNIQUE FOR DISCRETE-EVENT DRAG MODULATION FOR AEROCAPTURE MISSIONS ». Dans Advances in the Astronautical Sciences, 877–91. Cham : Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-51928-4_50.
Texte intégralWang, Xi, Xiangbin Yu, Tao Teng et Guangying Wang. « Energy-Efficient Power Allocation Scheme Based on Discrete-Rate Adaptive Modulation in Distributed Antenna System ». Dans Machine Learning and Intelligent Communications, 284–92. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00557-3_29.
Texte intégralVamsidhar, A., P. Rajesh Kumar et K. Raja Rajeswari. « A New Approach to Investigation of Discrete Wavelet-Based Multiuser MIMO-OFDM for BPSK Modulation Scheme ». Dans Proceedings of 2nd International Conference on Micro-Electronics, Electromagnetics and Telecommunications, 323–32. Singapore : Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4280-5_34.
Texte intégralLi, Xiujian, Xiaoguang Hou, Yongming Nie, Wenhua Hu, Jiankun Yang et Junbo Yang. « Analyze the Discrete Photo-Induced Current Pulses of the Photorefractive Spatial Light Modulator ». Dans Lecture Notes in Computer Science, 102–9. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-10442-8_14.
Texte intégralZisapel, Nava, Yossi Anis et Michal Gavish. « Melatonin Receptors in Discrete Areas of Rat and Hamster Brain : Modulation by Melatonin, Testosterone and the Photoperiod ». Dans Role of Melatonin and Pineal Peptides in Neuroimmunomodulation, 97–106. Boston, MA : Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3756-4_10.
Texte intégralActes de conférences sur le sujet "Modulation discrète"
Warde, Cardinal. « SLM-specific imperfections and their influence on optical processor performance ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.tue1.
Texte intégralDong, Po, Jeffrey Lee, Kwangwoong Kim, Young-Kai Chen et Chengcheng Gui. « Ten-Channel Discrete Multi-Tone Modulation Using Silicon Microring Modulator Array ». Dans Optical Fiber Communication Conference. Washington, D.C. : OSA, 2016. http://dx.doi.org/10.1364/ofc.2016.w4j.4.
Texte intégralWu, Jiuda, et Behrooz Yousefzadeh. « Numerical Analysis of Phase Nonreciprocity in a Linear Spatiotemporally Modulated System ». Dans ASME 2023 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/detc2023-110347.
Texte intégralKhodr, M. F., J. J. Sluss et T. E. Batchman. « An integrated optical phase modulator using a PbSe-clad BaF2 waveguide ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.tuz27.
Texte intégralTong, Yeyu, Xinru Wu, Jie Liu, Chester Shu et Hon Ki Tsang. « Assessment of Integrated Ge Franz-Keldysh Modulator for Discrete Multi-Tone Modulation ». Dans Optical Fiber Communication Conference. Washington, D.C. : OSA, 2018. http://dx.doi.org/10.1364/ofc.2018.w4d.5.
Texte intégralManevitch, Leonid I., et Andrey I. Musienko. « Transversal Nonlinear Dynamics of Stretched Chain on Elastic Foundation ». Dans ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84920.
Texte intégralBaig, Mirza Uzair, Anders Host-Madsen et Aria Nosratinia. « Discrete modulation for interference mitigation ». Dans 2017 IEEE International Symposium on Information Theory (ISIT). IEEE, 2017. http://dx.doi.org/10.1109/isit.2017.8006766.
Texte intégralChatterjee, M. R., P. P. Banerjee et O. Ziv. « Numerical investigation of the modulation properties of an AM soliton pulse upon reflection from a nonlinear/dispersive interface ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.thss4.
Texte intégralNaito, Takeru, Masahiro Yabuno, Fumihiro China, Shigehito Miki, Hirotaka Terai et Ryosuke Shimizu. « Spectral modulation of biphotons via Fourier optical synthesis ». Dans Conference on Lasers and Electro-Optics/Pacific Rim. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleopr.2022.cthp7f_04.
Texte intégralAdzhemov, A. S., et A. Y. Kudryashova. « Distortion with Multiple Discrete Modulation Techniques ». Dans 2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF). IEEE, 2021. http://dx.doi.org/10.1109/weconf51603.2021.9470537.
Texte intégralRapports d'organisations sur le sujet "Modulation discrète"
Gabella, W., J. Rosenzweig, R. Kick et S. Peggs. RF voltage modulation at discrete frequencies with applications to crystal channeling extraction. Office of Scientific and Technical Information (OSTI), mai 1992. http://dx.doi.org/10.2172/10153150.
Texte intégralGabella, W., J. Rosenzweig, R. Kick et S. Peggs. RF voltage modulation at discrete frequencies with applications to crystal channeling extraction. Office of Scientific and Technical Information (OSTI), mai 1992. http://dx.doi.org/10.2172/5153023.
Texte intégralWeinberg, Zwi G., Adegbola Adesogan, Itzhak Mizrahi, Shlomo Sela, Kwnag Jeong et Diwakar Vyas. effect of selected lactic acid bacteria on the microbial composition and on the survival of pathogens in the rumen in context with their probiotic effects on ruminants. United States Department of Agriculture, janvier 2014. http://dx.doi.org/10.32747/2014.7598162.bard.
Texte intégralDahl, Geoffrey E., Sameer Mabjeesh, Thomas B. McFadden et Avi Shamay. Environmental manipulation during the dry period of ruminants : strategies to enhance subsequent lactation. United States Department of Agriculture, février 2006. http://dx.doi.org/10.32747/2006.7586544.bard.
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