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 13 of 13 for “"Relay Channel"”.
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Code design for the relay channel
… theory. Cooperative strategies, often called relay protocols, describe the processing performed by the information forwarding (relaying) nodes. My research proposes implementable schemes for two relay protocols - decode-and-forward and estimate-and-forward. In each case, the starting point is …
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Energy aware network coding in wireless networks
… with a set of nodes. We then consider a wireless-relay channel, in which a relay node assists in the transmission of data from a source to a destination. This wireless relay channel can be seen as a simplified extended star network, where nodes have relay capabilities. The objective is to …
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Design and Analysis of Multilevel Coded Modulation for Multi-Node Networks
… additive white Gaussian noise (AWGN) broadcast channel, a multi-level coding architecture is proposed whose performance can approach the entire capacity region, and whose attractive features include a convenient partition of the two users’ data so that one and only one of the modulation bit …
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Intelligent antenna sharing in cooperative diversity wireless networks
… of the proposed solutions require simultaneous relay transmissions at the same frequency bands, using distributed space-time coding algorithms. Careful design of distributed space-time coding for the relay channel is usually based on global knowledge of some network parameters or is usually left …
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Delay QoS Provisioning and Optimal Resource Allocation for Wireless Networks
… 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 are considered …
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Approximation techniques in network information theory
… of a communication network, namely the broadcast channel, the interference channel and the relay channel, have been open problems for several decades. When exact solutions are elusive, progress can be made by seeking for approximate solutions first. The first contribution of the thesis is to …
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Interference Mitigation for Cellular Networks: Fundamental Limits and Applications
… This thesis studies the use of interference-channel and relay-channel techniques to mitigate intercell interference and to improve the throughput and coverage of cellular networks. The aim of this thesis is to demonstrate the benefit of the proposed interference mitigation schemes through …
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Advanced Multiple-Input and Multiple Output Technology in Wireless Communication Networks
… of a multiple-input and multiple-output (MIMO) channel can increase linearly with the number of antennas. However, besides deploying multiple antennas at base stations, there are many challenges to develop MIMO to further boost the wireless network capacity. In this thesis, advanced MIMO …
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Relays for Interference Mitigation in Wireless Networks
… medium necessitates the presence of certain relay nodes in the network. Conventionally, the role of such relays is limited to passing messages in a chain in a point-point hopping architecture. With the decentralization, multiple nodes could potentially interfere with each other. This work …
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Design and analysis of transmission strategies in wireless relay networks
… (MIMO) technique has shown to improve the channel capacity dramatically. However, placing multiple antennas within a tiny and slim mobile handset while maintaining the good isolation between antenna elements poses a big challenge. In pursuit of potentials promised by MIMO, an alternative …
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Wireless Throughput and Energy Efficiency under QoS Constraints
… throughput and energy efficiency in fading channels are studied in the presence of randomly arriving data and statistical queueing constraints. In particular, Markovian arrival models including discrete-time Markov, Markov fluid, and Markov-modulated Poisson sources are considered, and …
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Characterisation and performance analysis of random linear network coding for reliable and secure communication
… (ii) investigate the performance of RLNC in relay assisted networks and propose a new cross-layer RLNC-aided cooperative scheme for reliable communication, (iii) characterize the secrecy feature of RLNC and propose a new physical-application layer security technique for the purpose of …
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Relay-aided communications with partial channel state information
… communication links. Such terminals are called relay nodes, and the corresponding systems are referred to as being relay-aided. As in the case of point-to-point communication, design of efficient transmission and reception techniques in relay-aided systems depends on the availability of …