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 90 for “"Access networks"”.
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On greening optical access networks
… concern, reducing energy consumption of optical access networks has become an important issue for network designers. In Ethernet passive optical network (EPON), the optical line terminal (OLT) located at the central office broadcasts the downstream traffic to all optical network units (ONUs), …
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Misuse Detection in Dynamic Spectrum Access Networks
With dynamic spectrum access emerging as an important paradigm for efficient spectrum use, mechanisms are required to ensure disciplined spectrum access by secondary users. This must be done without requiring secondary users to disclose private data, such as their exact usage pattern or identities …
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Sustainability & Efficient Resource Utilization in Access Networks
L'abstract è presente nell'allegato / the abstract is in the attachment
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Future Extensions to Passive Optical Access Networks
… in metropolitan regions require high density access networks to meet the growing need for bandwidth that results. Furthermore, new services such as high definition TV, online gaming and real-time video teleconferencing are becoming increasingly popular among consumers. These services require …
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Spectrum Auctions for Dynamic Spectrum Access Networks
We examine the problem of designing an auction-based market mechanism for dynamic spectrum sharing when there are multiple sellers and multiple buyers. We assume that the sellers are selfish players and focus on an optimal auction mechanism that maximizes the expected payoff or profit of the …
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Resource Allocation for Next Generation Radio Access Networks
… hungry applications, the architecture of mobile networks is moving towards that of densely deployed cells where each cell may use a different access technology as well as a different frequency band. Next generation networks (NGNs) are essentially identified by their dramatically increased data …
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Context-aware handoff support for wireless access networks
… emergence of several heterogeneous wireless networks and technologies has allowed users to have access to IP services anywhere, at anytime, from any network and with whatever terminal they use. This computing platform has been driven by the rapid evolution of mobile devices that are equipped …
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Optimizing resource allocation in next-generation optical access networks
… applications, Passive Optical Networks (PONs) exploit the potential capacities of optical fibers, and are becoming promising future-proof access network technologies. On the other hand, for a broader coverage area and higher data rate, integrated optical and wireless access is …
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Optimal Architecture in Hierarchical Mobile IP-based Wireless Access Networks
… increase in traffic load over wireless networks. The next generation of mobile networks must grow to handle the increase in demand in IP traffic. Micro mobility management and provisioning of Quality of Service (QoS) have become two main factors for the successful deployment of the next …
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Throughput and delay analysis of frequency hopped multiple access networks
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.
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On the Scalability of Ad Hoc Dynamic Spectrum Access Networks
Dynamic Spectrum Access allows wireless users to access a wide range of spectrum which increases a node's ability to communicate with its neighbors, and spectral efficiency through opportunistic access to licensed bands. Our study focuses on the scalability of network performance, which we define …
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A QoS enabling queuing scheme for Fourth Generation wireless access networks
… approaches. The scheme models the radio access network as a network of queuing nodes. With the model, the link layer QoS statistics of user traffic in each available path through the network is determined. The author postulates that the statistics indicate the QoS capabilities of the …
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Dynamic collision reduction protocol for ultra-wide bandwidth multiple access networks
… collision reduction (DCR) protocol, a multiple access protocol that requires frame synchronization. At the physical-layer, we develop the optimal neighbor detector for ultra-wide bandwidth (UWB) signaling in a dense multipath environment with delay uncertainty. The detector takes advantage of …
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Cross-layer Control for Adaptive Video Streaming over Wireless Access Networks
… the last decade, the wide deployment of wireless access technologies (e.g. WiFi, 3G, and LTE) and the remarkable growth in the volume of streaming video content have significantly altered the telecommunications field. These developments introduce new challenges to the research community including …
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Determination of buffer size for access networks in first generation optical networks
… proven that congestion in a network is in the access or edge network and not the core of the network. In addition to the traditional assignment of buffer size in a network, which is backed by Request for Comments and router manufa ctures, there have been alternative models proposed for the …
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Determination of buffer size for access networks in first generation optical networks
… proven that congestion in a network is in the access or edge network and not the core of the network. In addition to the traditional assignment of buffer size in a network, which is backed by Request for Comments and router manufa ctures, there have been alternative models proposed for the …
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Downlink Transmission and Caching Strategies for Backhaul-Limited Cloud Radio Access Networks
This thesis considers a downlink cloud radio access network (C-RAN) where all the base stations (BSs) are connected to a central processor (CP) via capacity-limited backhaul links. Two fundamental and different downlink transmission strategies are studied, namely the data-sharing strategy and the …
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A Joint Optimization Approach for Power-Efficient Heterogeneous OFDMA Radio Access Networks
L'abstract è presente nell'allegato / the abstract is in the attachment
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