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 7 of 7 for “"Arbitrary-Phase"”.
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Enhanced Implementations for Arbitrary-Phase Spread Spectrum Waveforms
… when used to define multi-bit resolution arbitrary-phase waveforms, also present significant challenges to the intended receiver, which must synchronize correlator processing to match the code every time it changes. High-order phase shift keying (PSK) spread modulations do, however, …
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Phase noise effects on OFDM : analysis and mitigation
… One drawback of OFDM is its sensitivity to phase noise. It has been shown that even small phase noise leads to significant performance loss of OFDM. Therefore, phase noise effects on OFDM systems need to be analyzed and methods be provided to its mitigation. Motivated by what have been …
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Lower hybrid modeling and experiments on Alcator C-Mod
A highly flexible phase control system was developed in order to dynamically adjust the parallel wave number spectrum of driven LH waves on Alcator C-Mod. Wave coupling between the antenna and the plasma was studied using this system. A coupling code was modified to allow arbitrary phase and …
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Coherent Interaction Between Laser Photons and Single Spins in InAs Quantum Dots
… be used as a non-linearity to induce a photon phase shift. This is extended using spin-pumping techniques to create a single-photon phase switch, which is an important component for future quantum information networks. A quantum dot-micropillar system is also utilised to create time-bin encoded …
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Morton Effect Induced Instability in Mid-Span Rotorâ Hydrodynamic Bearing Systems
… rotors with the thermal imbalance having arbitrary phase difference has been generated. It shows that the stable operating regions of the system are bounded by two curves of threshold of instability. The results show that the Morton Effect induced instability thresholds are actually …
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Nonlinear Dynamics of Energy Harvesting Ocean Buoys
… complex functions with nonlinear sweep rates and arbitrary phase shifts. This method improves the accuracy of various simulation results throughout this dissertation but can be extended to aid the analysis of any generic dynamical system.</p>
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Modeling and Stability Analysis for Multiphase Constant On-Time Control With Phase Overlapping
Multiphase buck voltage regulators (VRs) powering today's high-performance processor loads must regulate output voltage within a small tolerance window and handle a large steady-state current. For output voltage regulation, multiphase current-mode and V² constant on-time (COT) control techniques …