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 12 of 12 for “"Rate capacity"”.
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On rate capacity and signature sequence adaptation in downlink of MC-CDMA system
… addresses two topics in the MC-CDMA system: rate capacity and adaptation of users' signature sequences. Both of them are studied for the downlink communication scenario with multi-code scheme. The purpose of studying rate capacity is to understand the potential of applying MC-CDMA technique …
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Rail Tunnel Evacuation
… and its applicability to rail tunnels is demonstrated. In addition, new empirical data on the flow rate capacity of train exits during evacuation in rail tunnels, as well as on walking speeds in smoke free and smoke filled rail tunnels, is presented. Finally, a number of technical installations …
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Information Theoretic Limits of State-dependent Networks
… at the receiver. Inner and outer bounds on the capacity region are first derived, which improve the state-of-the-art bounds given in the literature. Further comparison of these bounds yields either segments on the capacity region boundary or the full capacity region by considering various …
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Improving supply chain planning with advanced analytics : analyzing lead time as a case study
… to become a major component in competitive strategy to enhance organizational productivity and profitability. While considerable research has been done in formulating accurate and robust demand forecasts, many areas for improvement remain in supply chain planning. In particular, many planning …
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Synthesis and Electrochemical Performance of Lithium Lanthanum Titanate Solid-state Electrolyte
… lithium-ion batteries with higher energy capacity and safety, solid-state electrolytes play an important role in improving ionic conductivity and preventing leakage in lithium-ion batteries. Lithium lanthanum titanate (Li3xLa2/3–xTiO3, LLTO) is a ceramic oxide solid-state electrolyte …
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Ionic conductivity and exchange current density of non-aqueous lithium polysulfide electrolyte
… given electrolyte system, sulfur charge storage capacity (e.g. mAh/g sulfur) decreases dramatically with increasing sulfur concentration at a fixed C-rate, which corresponds to higher current output in higher concentration system. Understanding the limiting factors that undercut the rate capacity …
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A new optimization uniformity for indoor visible light communication systems using optical attocells configuration
The demand for high data rate, capacity, increasing user mobility as well as low power consumption is increasing daily, where it is considered as main the challenges facing the radio frequency (RF) technology. Therefore, an alternative technology called visible light communications (VLC) was …
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Microscopic Simulation Model for Mixed Traffic of Connected Automated Vehicles and Conventional Vehicles on Freeways
… (MDVs) at the full-spectrum of mixed penetration rates on a freeway segment by incorporating the car-following and lane-changing models via a conditional linkage to investigate the sensitivities in highway capacity and travel time. The car-following models for CAVs and MDVs were modified from the …
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Modelling of Rainfall Drop Size Distributions for Application in Fade Prediction on Earth-Space Paths
… required multi-gigabit per second downlink bit rate capacity. However, at Ka-band the downlink becomes highly susceptible to disruption by rain during each satellite pass when path elevation angles will range anywhere between 90 degrees and 20 degrees or less. The resulting rain attenuation will …
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Preparation, Characterization, and Application of Molecular Ionic Composites for High Performance Batteries
… range from 23 to 150 °C, and the discharge capacity retention of the cell is as high as 99% after 50 cycles at 150 °C. By replacing the IL in the MIC with a charge-neutral liquid, single-ion-conducting polymer gel electrolyte composed of PBDT and polyethylene glycol (PEG) oligomer are …
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Doctoral Thesis: Massive MIMO in Real Propagation Environments
… connected vehicles and so on. Much higher data rates than in today's 4G systems are required. In the 5G visions, better coverage in remote regions is also included, aiming for bringing the current "4 billion unconnected" population into the online world. There is also a great interest in "green …
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Corrosion Behavior of Corrosion-Resistant Steel Reinforcements in High and Ultra-High Performance Concrete in Chloride Attack Environments
… concrete. The corrosion potential, corrosion rate, and reinforcement mass loss of column specimens were monitored regularly over 24 months in an accelerated aging environment, and the degradation of the axial-load-carrying-capacity of the columns over time was also obtained and discussed. …