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 58 for “"Power constraints"”.
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On the MIMO Capacity with Multiple Power Constraints
… to this fundamental problem under multiple power constraints. From the theoretical perspective, capacity maximization is a classical problem. However efficient algorithms considering realistic scenarios or multiple power constraints, especially for massive MIMO application, are still sparse. …
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On Communication Over Correlated Fading Channels With Practical Power Constraints
Caire, Taricco, and Biglieri presented a detailed analysis of bit-interleaved coded modulation (BICM), a simple and popular technique used to improve system performance, especially in the context of fading channels. They derived an upper bound to the probability of error, called the expurgated …
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Optimizing performance under thermal and power constraints for HPC data centers
Energy, power and resilience are the major challenges that the HPC community faces in moving to larger supercomputers. Data centers worldwide consumed energy equivalent to 235 billion kWh in 2010. A significant portion of that energy and power consumption is devoted to cooling. This thesis proposes …
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System Analysis for Satellite Networks with Free-Space Optical Links
… network latency and satellite transmission power, and network latency minimization based on satellite transmission power constraints. We investigate the phasing parameter for Starlink Phase 1 Version 3 and Kuiper Shell 2 constellations. We find the best value of the phasing parameter. We …
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Analysis and Cross -Layer Design of Medium Access and Scheduling in Wireless Mesh Networks
… allocation scheme that incorporates PHY layer power control and rate adaptation, and is aware of power constraints.
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Spread spectrum satellite multiple access and overlay service
… The analysis considers such factors as satellite power constraints and adjacent satellite interference. It considers the effect of onâ board processing on the multiple access efficiency and investigates the feasibility of overlaying low data rate spread spectrum signals on existing satellite …
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Tradeoffs in Designing Massively Parallel Accelerator Architectures
… and RTL synthesis to characterize the area-power-delay of the underlying circuits. This integrated methodology enables a much more powerful analysis of the performance-area and performance-power tradeoffs for the low level micro-architecture. We use this methodology to find the optimal …
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Exploiting channel symmetry in two-way channels
… laptops are subject to stringent size weight and power constraints relative to the base stations or access points they communicate with. Asymmetry of constraints results in asymmetry of the cost of computation. This disparity in cost motivates efforts to shift signal processing such as channel …
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Cross-Frame Association of Through-Wall Handheld-Radar-Based Detections
… operating on the edge under the compute and power constraints of the handheld radar system in which it will be embedded.
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Verification and Configuration of a Run-Time Reconfigurable Custom Computing Integrated Circuit for DSP Applications
… and throughput. This leads to area, speed, power, and application-specific constraints. In recent months, an integrated circuit known as the VT Colt has been developed to address some high performance digital signal processing (DSP) problems that conventional processors, CCMs, and ASICs …
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Hybrid Chemical-Electric Propulsion Systems for CubeSats
… on-board, the stringent size, weight, and power constraints on CubeSat have mainly limited CubeSats to only one type of propulsion. However, the research and development in propulsion systems miniaturization over the last couple of years provides an opportunity to reconsider and evaluate …
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Codebook design for distributed relay beamforming system
… focuses on the phaseonly codebook and with-power-control codebook design methods under individual relay power constraints. Phase-only codebooks can be generated off-line with the Grassmannian beamforming criterion. Due to non-uniform distribution of the optimal beamforming vector in the …
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GRAND-assisted Optimal Modulation
For Gaussian channels with peak and average power constraints the optimal modulation (OM) schemes are known to have nonuniform probability distributions over the signal points. An established way to obtain these distributions is assigning different number of bits to different constellation points. …
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Observability Analysis in Navigation Systems with an Underwater Vehicle Application
… for small AUVs which have severe volume and power constraints. The main contribution of this work is observability analysis of the proposed navigation system using novel approaches towards uniform observability of linear time-varying (LTV) systems. We utilize the notion of limiting systems in …
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Transmit Diversity and its Application to Cooperative Networking
… a local antenna array becomes high due to space constraints in a terminal, current performance achieving strategies do not actually deliver good results. Moreover, most mobile terminals are currently equipped with only one antenna. In view of this limitation, we study the recently proposed user …
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Superconducting Electronics for Breakthrough Starshot Communications
… data [1]. In order to meet the size, weight, and power constraints of the mission, superconducting electronics should be considered for onboard processing and interfacing with the communications system. Previous research has shown that superconducting nanowire electronics consume over 100𝗑 less …
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Monolithically 3-D Printed, Quadrupole Mass Filter for High-Precision, Compact, CubeSat Mass Spectrometry
… mass spectrometers are large, heavy, and power hungry, restricting their ability to be deployed into in-situ, portable, and hand-held scenarios, e.g., drones and CubeSats (measurements in the atmosphere are crucial for monitoring climate change). Miniaturization has been attained at the …
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Optimized ray tracing for real time use without hardware accelerators
… not including this specialized hardware due to power constraints, we present an optimized model which uses ray tracing to produce a higher quality output than that of a raster engine while at the same time not requiring the use of specialized hardware accelerators to achieve real time frame …
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Automated Electronic Mode Stirring in Reverberant Cavities to Optimize Backscatter Link Margins
… while conforming to the size, weight, and power constraints of the system. Past research has shown that electronic mode stirring can mitigate the effects of multipath in a static scenario. This work presents an automated reconfiguration strategy that can search through a set of electronic …
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An electrically driven 8-14µm band solid-state modulator
… undesirable, especially when there are space and power constraints, and also devices sensitive to vibrations will benefit from the use of solid state modulators.<br/><br/>Requirements that must be satisfied for solid state modulators to be feasible include good transmission, adequate depth of …
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