Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"SIMO"”.
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Use of SIMO Converstion for Optimizing LED Light Drivers
… order to achieve a more dramatic energy savings. SIMO technology represents an opportunity in LED lighting to combine the low cost of single-stage converters with the energy saving capability of a two-stage, multiple string solution. This paper describes the modeling, analysis, design, and testing …
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Implementations of Multi-Antenna Systems in a USRP Based SDR using Simulink
… but has yet to release support for any SIMO, MISO, or MIMO applications. In this work, we produce a testbed for proof of SIMO concepts and performance improvements in MATLAB and Simulink along with outlining preliminary work in implementing the MISO method of Alamouti STBC. The processes …
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Design of, and initial experiments with, a MIMO plate control testbed
… for AVC and ASAC and is an extension of previous SIMO control investigations which used accelerometers and shakers. This portion of the development process of the MIMO plate control testbed is concerned with actuator and sensor materials and architecture, modeling approaches and requirements, and …
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Modified Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (MACO-OFDM) system
… system. A Single Input Multiple Output (SIMO) approach using multiple receivers is employed to mitigate the impact of atmospheric turbulence. The performance of MACO-OFDM outperforms that of ACO-OFDM by nearly 3 dB, 4 dB, and 5 dB as the number of receiving apertures (nRx) increases as 1, …
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Robust Control Methods for Nonlinear Systems with Uncertain Dynamics and Unknown Control Direction
… nonlinear systems: single-input multiple output (SIMO) systems, systems with model uncertainty and bounded disturbances, and systems with unknown control direction. Control design for SIMO systems is challenging due to the fact that such systems have fewer actuators than degrees of freedom to …
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Método dos elementos finitos aplicado a análise não linear de vigas Timoshenko-Vlasov
… não-lineares através da lei de material de Simo-Ciarlet. A partir do programa desenvolvido, são apresentados exemplos numéricos para ilustrar a consistência da formulação e em seguida, é realizada a validação dos resultados obtidos com uma modelagem computacional utilizando o software …
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Feedback Control of Multi-Story Structures under Seismic Excitations
… SSCC model is a single input/multiple output (SIMO) dynamic system; which requires only one actuator acting on the base; the SCC model has duality. On one hand, the system can be classified as MIMO when control actuators are regarded as the input. On the other hand, it can be regarded as a SIMO …
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Acoustic and seismic signal processing for footsetp detection
… method for blindly estimating the filters of a SIMO channel is presented. This method is attractive because it allows for a more tractable performance analysis.
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System design of the MeerKAT L - band 3D radar for monitoring near earth objects
… multistatic, single input multiple output (SIMO) radar configurations were proposed for radio telescope arrays in detecting, tracking and imaging small space debris in the low Earth orbit (LEO) and PHAs. The maximum dwell time possible for the radar geometry was found to be 30 seconds, with …
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Stability problems in constrained pendulum systems and time-delayed systems
… We show that in the single-input/multi-output (SIMO) case of the class of systems under consideration, the problem may be reduced by using singular value decomposition to that of finding the roots of a certain polynomial. The obtained closed-form solution accurately predicts the smallest time …
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Single-inductor, multiple-output buck converter with parallel source transient recovery
… study of a single-inductor, multiple-output (SIMO) DC-DC buck converter with parallel source transient recovery. This converter would provide substantial cost and space savings over traditional options for producing multiple supply voltages. Operating in pseudo-continuous conduction mode …
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Kuchunguza fani na dhamira katika semi zilizoandikwa katika vyombo vya safari vya Baharini Kisiwani Pemba
… na tashtiti,taswira, kejeli, methali, misemo,simo, sitiri na kadhalika. Pia mtafiti aligundua kuwa semi hizo zina dhamira mbalimbali.
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VT-STAR design and implementation of a test bed for differential space-time block coding and MIMO channel measurements
… systems use single-input multiple-output (SIMO) channel in the reverse link, meaning one transmit antenna at the user terminal and multiple receive antennas at the base station. Recently, information theoretic research has shown an enormous potential growth in the capacity of wireless …
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Wireless transmission with energy harvesting and storage
… beamforming scenarios including MISO, SIMO, and MIMO. The analytical performance gap to the optimal solution is presented. The simulations are compared with other online algorithms in the literature and provides a superior performance. A joint online power control strategy is designed …
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Shell finite elements, with applications in biomechanics
… tissues. The rigorous but complex theory due to Simo and Fox (1986) is presented in an accessible manner, with detailed derivations where appropriate. The presentation is confined to small strains and linear elasticity, with the constitutive theory extended to take account of transverse isotropy. …
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Mathematical and computational aspects of the enhanced strain finite element method
… results established earlier by B D Reddy and J C Simo for affine-equivalent meshes carry over to the case of isoparameric elements. That is, the method is stable and convergent provided that a set of three conditions are met, and convergence is at the same rate as in the standard method. The three …
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A Feature-Based Call Graph Distance Measure for Program Similarity Analysis
A measurement for how similar (or distant) two computer programs are has a wide range of possible applications. For example, they can be applied to malware analysis or analysis of university students' programming exercises. However, as programs may be arbitrarily structured, capturing the …
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On the dynamics, stability and control of displaced lunar orbits
Now more than a speculative technology, solar sailing offers new capabilities for the design of space missions. This new concept promises to be useful in overcoming the challenges of transportation throughout the solar system. By exploiting the momentum transported by solar photons, solar sails can …
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Nonreciprocal and Exotic Radiative Transfer in Type-I Magnetic Weyl Semimetals
The classical theory of radiative heat transfer has proven extraordinarily useful, both in advancing fundamental physics through the discovery of quantum mechanics and in developing practical applications. However, the classical theory can break down, opening up new opportunities for energy …
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Integrated Switching DC-DC Converters with Hybrid Control Schemes
… integrated single-inductor multiple-output (SIMO) converter, tailored for DVS-enabled multicore systems is addressed. With a multi-mode control algorithm, DVS tracking speed and line/load regulation are significantly improved, while the converter still retains low cross regulation.All three …
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