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 17 of 17 for “"cooperative networks"”.
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Relay Selection Strategies for Multi-hop Cooperative Networks
… several relay selection strategies for multi-hop cooperative networks. The relay selection strategies we propose do not require a central controller (CC). Instead, the relay selection is on a hop-by-hop basis. As such, these strategies can be implemented in a distributed manner. Therefore, …
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Transceiver design for wireless energy harvesting cooperative networks
… RF energy harvesting technique is studied in the cooperative wireless network, and different optimization studies are investigated. First, an energy-efficient optimization is considered in the cooperative system with the time switching relaying and power splitting relaying protocols. Then, a …
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Analysis and Optimization of Cooperative Wireless Networks
<p>Recently, cooperative communication between users in wireless networks has attracted a considerable amount of attention. A significant amount of research has been conducted to optimize the performance of different cooperative communication schemes, subject to some resource constraints such as …
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Efficient approaches to robust and cooperative wireless network design
In wireless networks, relaying and user cooperation offer several attractive benefits such as higher throughput, better power efficiency, and larger coverage. As a result, cooperative networks are regarded as one of the most promising enabling technologies able to meet the increasingly high rate …
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Node Selection, Synchronization and Power Allocation in Cooperative Wireless Networks
… communications: bandwidth and power. In turn, cooperative communications has emerged as a new communication paradigm in which network nodes share their antennas and transmission resources for distributed data exchange and processing. Recent studies have shown that cooperative communications can …
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Differential modulation and non-coherent detection in wireless relay networks
The technique of cooperative communications is finding its way in the next generations of many wireless communication applications. Due to the distributed nature of cooperative networks, acquiring fading channels information for coherent detection is more challenging than in the traditional …
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Overcoming inequality in regional innovation ecosystems : the Basque country and the advance of economic democracy
… economic development planning, the emergence of cooperative networks of firms such as Mondragon, and the local social and cultural, enabling factors, this thesis will produce a set of recommendations to policymakers and practitioners engaged in developing regional innovation ecosystems.
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Power Control and Resource Allocation for QoS-Constrained Wireless Networks
… system due to cost and hardware limitations. Cooperative communication allows single-antenna devices to share their spectrum resources and form a virtual MIMO system where their quality of service (QoS) may be improved via cooperation. Most cooperative communication solutions are based on …
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Cooperative Positioning in Wireless Sensor Networks Using Semidefinite Programming
… location is estimated. In this work, we exploit cooperative localization as a recent and trending technology and semidefinite programming (SDP) as a powerful tool in our research. Cooperative localization has several advantages over the traditional noncooperative localization in terms of …
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Resilience and recovery of creative SMEs: insights from Nigeria
… demand. Important recovery tactics such as cooperative networks and business model innovation, therefore, make digital transformation a requirement. The results emphasise the necessity of focused governmental interventions, such as financial assistance, infrastructural development, and …
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Optimal resource sharing and spectrum leasing in energy efficient relay-assisted networks
… to establish a cooperation between the two networks, we study three different design problems in a single carrier scenario. In the first approach we maximize the smaller of the secondary transceiver rates subject to two separate constraints on the total powers consumed in the primary and the …
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Performance Evaluation and Improvement of Wireless Amplify-and-Forward Cooperative-Based Systems under Nodes Mobility and Imperfect CSI Estimation Impacts
Cooperative communication techniques have been introduced in wireless networks to achieve spacial diversity-gain via the readiness of multiple users (via relays) to assist a source forwarding its data to a final destination. Cooperative communication techniques have shown their capability in …
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Distributed Protocols for Signal-Scale Cooperation
… and coordination of devices to enable cooperative behavior, (b) the conservation of energy for devices cooperating to help others, and (c) the management of increased inter-device interference caused by multiple spatially separate transmissions in a cooperative network. In this thesis, …
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Delay QoS Provisioning and Optimal Resource Allocation for Wireless Networks
… finite-blocklength coding regime.</p> <p>Next, cooperative relay networks are considered under QoS constraints. Specifically, the throughput performance in the two-hop relay channel, two-way relay channel, and multi-source multi-destination relay networks is analyzed. Finite-blocklength codes …
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Advancing RIS Optimization: From Ideal to Realistic Models
… the performance of next-generation wireless networks. These surfaces consist of low-cost, energy-efficient reflecting elements that can dynamically alter the electromagnetic properties of the wireless channel. The ability to dynamically control the wireless channel enables exciting …