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 “"channel allocation"”.
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Distributed dynamic channel allocation in mobile computing system
Channel allocation problem is one of the most important issues in mobile computing networks. The purpose of this thesis is to develop a new distributed dynamic channel allocation algorithm. The proposed algorithm attempts to reuse channels in different cells to optimize the channel usage. It also …
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Dynamic channel allocation in satellite and wireless networks
… thesis is to understand how to utilize wireless channels in a fair and efficient manner within a multi-users communication environment. We start by exploring the allocation of a single wireless downlink fading channel among competing users. The allocation of a single uplink multiacccess fading …
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Channel allocation and admission control in cellular communications networks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Efficient channel allocation and medium access organization algorithms for vehicular networking
… Networks (VANETs), organizing the wireless channel access to efficiently use the bandwidth is one of the main challenges in VANET. In this dissertation, we focus on channel allocation and media access organization for Vehicle-to-Roadside Units (V2R) and Vehicle-to-Vehicle (V2V) …
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Traffic-aware channel allocation and routing in multichannel, multi-radio wireless networks
… the transmission spectrum into a narrow channel and a wide channel. The narrow channel is used for transmitting the short packets and the wide channel is used for transmitting the longer packets. We propose a protocol called WiSP (channel Width Selection based on Packet size) to estimate …
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Static and dynamic virtual channel allocation for high performance, in-order communication in on-chip networks
… networks (OCINs) have multiple virtual channels (VCs) to mitigate the effects of head-of-line blocking. Multiple VCs necessitate VC allocation schemes since packets or flows must compete for channels when there are more flows than virtual channels at a link. Conventional dynamic VC …
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Resource Allocation and Adaptive Antennas in Cellular Communications
… improvement can be achieved by reducing co-channel interference. Several techniques have been proposed in literature for mitigating co-channel interference, such as adaptive antennas and power control. Also, by allocating transmitter power and communication channels efficiently (resource …
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Island Genetic Algorithm-based Cognitive Networks
… the island genetic algorithm to three problems: channel allocation, joint power and channel allocation, and flow routing. The channel allocation problem is a major challenge for dynamic spectrum access which, in turn, has been the focal application for cognitive radios and cognitive networks. The …
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Optimization of Spectrum Allocation in Cognitive Radio and Dynamic Spectrum Access Networks
… cognitive radio networks (CRNs) is intelligent channel allocation which will improve the performance of the network and spectrum utilization. The objective of this dissertation is to address the channel allocation optimization problem in cognitive radio and DSA networks under both centralized …
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Interference Management of Inband Underlay Device-toDevice Communication in 5G Cellular Networks
… emanating from the reuse of cellular channels by D2D pairs. Hence, this dissertation focuses on the technical challenge with regards to interference management in underlay D2D communication. In order to tackle this challenge to be able to exploit the potentials of D2D communication, …
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Solutions for Dynamic Channel Assignment and Synchronization Problem for Distributed Wireless Multimedia System
… personal communication service systems, a channel assignment problem and synchronization problems should be solved efficiently. Recent demand for mobile telephone service have been growing rapidly while the electro-magnetic spectrum of frequencies allocated for this purpose remain limited. …
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Dynamic Channel -Aware Bandwidth Management in IEEE 802.11 Networks
… The major components of our architecture are a channel quality monitor, a central bandwidth manager (BM) that implements a channel allocation policy to distribute channel time to competing flows, and a rate-control mechanism that adjusts the traffic being injected into the network by a flow in …
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Performance analysis and resource allocation in CDMA wireless networks for multimedia services
… algorithms for admission control and resource allocation at the session, burst and packet levels. The purpose of this research is to develop and analyze optimal resource allocation strategies to maximize throughput of wireless systems with integrated services. Given the multimedia user …
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Advanced handover procedure for cellular communication systems
… interrogate a candidate base station for a free channel. Handover signalling is exchanged via the fixed network and the time delay required to perform the handover is greatly affected by the levels of teletraffic handled by the network. In this thesis, a new handover strategy is developed to …
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Cell design in a cellular system using guard channels, call queueing and channel borrowing
… model, we incorporated the use of guard channels, queueing of new calls, and hybrid channel allocation. A numerically stable and efficient solution to a queueing system with two arrival streams having reserved and borrowable servers has been developed. This queueing system is used to …
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Design Considerations in a Modern Land Mobile Radio System
… LMR systems. Discussions related to trunked channel allocation, coverage, costs, security, and other capabilities are given. The application to and effect on everyday users is also considered. Several quantitative examples are provided to assist the end-user in determining when a solution is …
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A Comprehensive Method and System for the Design and Deployment of Wireless Data Networks
… signal strength and simple circuit-switched channel allocation protocols, modern and emerging wireless data networks are more noise and interference limited and rely on packet-based protocols. A heavier emphasis is needed on predicting and simulating throughput, bit error rate, frame error …
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Self-Reconfigurable Unmanned Aerial Vehicle Networks for Wireless Communication Provisioning
… Further, we address the issue of air-to-ground channel allocation to UAVs. Our solution considers link aggregation methods prior to theactual movement of UAVs, and eventually mitigating channel interferences by efficient reassignment of channels.
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Performance improvement in mobile ad-hoc networks.
… to improve network throughput under the worst channel conditions is proposed. While the conventional packet-fragmentation technique research focuses only on random-bit errors, the proposed technique employs both random bit errors and hidden-node collisions. The analytical models based on …
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Performance Modelling and Analysis of Handover and Call Admission Control Algorithm for Next Generation Wireless Networks
… which is expected to prioritize the arriving channel resource requests, based on user¿s classification and channel allocation policy. The proposed CAC algorithm couples with Fuzzy Logic (FL) and Pre-emptive Resume (PR) theories to manage and improve the performance of the integrated wireless …
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