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 14 of 14 for “"Cooperative relay."”.
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Performance analysis of cooperative relay networks in presence of interference
In the past decade, cooperative communication has emerged as an attractive technique for overcoming the shortcomings of point-to-point wireless communications systems. Cooperative relaying improves the performance of wireless networks by forming an array of multiple independent virtual sources …
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Resource allocation for multi-cell OFDMA based cooperative relay network
Cooperative communications is emerging as an important area within the field of wireless communication systems. The fundamental idea is that intermediary nodes, called relay stations (RSs), who are neither the data source nor destination, are used to assist in communication between sender and …
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Cooperative relay beamforming design for multi-cluster relay interference networks
… a multi-cluster amplified-and-forward (AF) relay interference network and design relay beam matrix for each cluster to maximize the minimum signal-to-interference-and-noise ratio (SINR) at destinations subject to the relay power budget within each cluster. Both single and multiple …
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Outage performance of cooperative cognitive relay networks
This thesis considers the incorporation of cooperative relays into a cognitive radio network. Cognitive radio is a potential solution to the growing scarcity of radio spectrum and the increased demand for wireless services. Cooperative relay networks can help cognitive radios to improve their …
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Cross-layer design for wireless sensor relay networks
… block codes (STBC), a new energy efficient cooperative routing algorithm using the STBC is proposed. Furthermore, the steady state performance of the network is analyzed via a Markov chain model. The proposed approach in this dissertation can significantly reduce the energy consumption and …
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A Trust-Based Relay Selection Approach to the Multi-Hop Network Formation Problem in Cognitive Radio Networks
… applications with limited spectrum resource. In cooperative communications and networking, users share resources and collaborate in a distributed approach, similar to entities of active social groups in self organizational communities. Users’ information may be shared by the user and also by the …
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Intelligent antenna sharing in cooperative diversity wireless networks
Cooperative diversity has been recently proposed as a way to form virtual antenna arrays that provide dramatic gains in slow fading wireless environments. However, most of the proposed solutions require simultaneous relay transmissions at the same frequency bands, using distributed space-time …
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Relay Diversity Techniques for OFDM and MC-CDMA
… impractical for<br/>certain applications. Cooperative relay diversity schemes have been<br/>introduced in an eort to overcome these limitations. Cooperative<br/>techniques allow a collection of communication nodes to cooperate<br/>with to relay signals amongst each other, eectively creating …
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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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Physical layer security: secrecy performance analysis and design of cooperative communication systems
… the physical layer’s security issues in various cooperative relay communication schemes. In cooperative communication, relay nodes are permitted to cooperatively help in transmitting data from the source to the legitimate destination, taking advantage of the wireless nature of the network. …
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Cooperative Detection and Network Coding in Wireless Networks
In cooperative communication systems, multiple terminals in wireless networks share their antennas and resources for information exchange and processing. Recently, cooperative communications have been shown to achieve significant performance improvements in terms of transmission reliability, …
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Cooperative relaying in cellular networks for improving receiver diversity and cell radius
… the foremost requirement. With the inception of cooperative relaying technology, a novel wireless relaying method of sharing the terminal node capabilities to forward the signal created a new paradigm to greatly improve the quality of the services and soon became the significant research area in …
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Design and analysis of transmission strategies in wireless relay networks
… by MIMO, an alternative concept, known as "cooperative relaying" has been developed and flourished over the last decade. This thesis presents novel research results on the design and performance evaluation of various relay protocols with and without memory. In this thesis, a novel soft …
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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 …