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 10 of 10 for “"dynamic spectrum allocation"”.
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Channelization for Multi-Standard Software-Defined Radio Base Stations
As the number of radio standards increase and spectrum resources come under more pressure, it becomes ever less efficient to reserve bands of spectrum for exclusive use by a single radio standard. Therefore, this work focuses on channelization structures compatible with spectrum sharing among …
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Discrete Event Simulation of Mobility and Spatio-Temporal Spectrum Demand
… Planning and design, network resource allocation and performance evaluation in cellular networks require realistic traffic modeling. We propose a Discrete Event Simulation framework, Diamond - (Discrete Event Simulation of Mobility and Spatio-Temporal Spectrum Demand) to model and …
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Multidimensional power amplifier circuit optimizations for adaptive radar.
As wireless technology and dynamic spectrum allocation continue to proliferate, the ability to dynamically reconfigure radar transmitter power amplifiers will become necessary for adaptive radar. Reconfigurable transmitters will require the ability to tune input parameters such as load impedance, …
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UAV Communications: Spectral Requirements, MAV and SUAV Channel Modeling, OFDM Waveform Parameters, Performance and Spectrum Management
… and also on efficient waveform as well as spectrum management implementation. Because of limited research in wideband aeronautical channel modeling, we have derived an A2G channel prototype applicable to SUAV and MAV. As part of the research at Wire- less@VT in designing and prototyping …
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Coverage Analysis and Resource Allocation in Heterogeneous Networks
… The problem of cell association and resource allocation in a HetNet is considered from two different points of view: when the user is i) mobile and ii) stationary. To incorporate mobility in coverage analysis for mobile users, we derive the probability of handoff in an irregular multi-tier …
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A Cognitive TV White Space Access Framework
… expanding, with the consequence that increasing spectrum capacity is being mandated. Following the switchover from analogue to digital platforms, <i>Television White Space</i> (TVWS) affords a fertile opportunity to supplement existing licensed spectrum to ease this scarcity. There are however, a …
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Efficient Resource Allocation Schemes for Wireless Networks with with Diverse Quality-of-Service Requirements
… to users is a critical requirement of resource allocation in wireless networks and has drawn significant research attention over a long time. However, the QoS requirements differ vastly based on the wireless network paradigm. At one extreme, we have a millimeter wave small-cell network for …
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Survivability Against Intelligent Adversary in Next-Generation Wireless Networks
The conventional static spectrum allocation policy has resulted in a suboptimal use of spectrum resources, leading to over-utilization in some bands and under-utilization in others. As a solution, dynamic spectrum access-based Cognitive Radio Network (CRN) has been proposed. CRN allows secondary …
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Statistical Analysis of Wireless Systems Using Markov Models
… that can improve the utilization of radio spectrum by incorporating some intelligence in its design. It can adapt with the environment and can change its particular transmission or reception parameters to execute its tasks without interfering with the licensed users. One problem that CR …
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Adaptive Radio Resource Management in Cognitive Radio Communications using Fuzzy Reasoning
… novel innovations and concepts are required to dynamically and automatically alter various radio parameters in accordance with the radio environment. These innovations open the door for cognitive radio (CR), a new concept in telecommunications. CR makes its decisions using an inference engine, …