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 10 of 10 for “"fronthaul"”.
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Análisis y estudio de soluciones para fronthaul radio
… to analyze the past, current and future state of fronthaul in radio access networks, summarizing the reference articles and the ideas that they develop. It also describes the main fronthaul characteristics and the current and future requirements, classifying them according to topologies, …
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Cloud-aided wireless systems: communications and radar applications
… The effect of this latency, which is due to the fronthaul transmission between the Remote Radio Head (RRH) and the BBU, is then studied for implementation of Hybrid Automatic Repeat Request (HARQ) protocols. Specifically, two novel solutions are proposed, which are based on the control-data …
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Optimizing the use of dedicated and contract transportation assets to maximize total system profit
… FC's existing decision framework focuses on fronthaul profit for each delivery while its heuristics do not reflect specific service or cost strategies. Additionally, the existence of backhaul revenue, late returns of containers, limits on containers and dedicated drivers, and a variable ship …
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Multi-layer, Low-crosstalk Integrated Optical Switches
… operations, validated through fronthaul experiments using 64-QAM LTE signals with >40 dB RF dynamic range and <1.8% error vector magnitude (EVM). Future work will focus on lossless optical switching systems through advanced material engineering (e.g., low-loss SiN waveguides …
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On the Optimization of Edge Server Scaling and Placement for Open Radio Access Network (O-RAN) Slicing
… regions, uncertainty is driven by wireless fronthaul behavior, modeled through a random number of retransmissions caused by power-limited communication links. We formulate the edge server placement problem as a chance-constrained mixed-integer linear program and develop two solution …
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Stochastic Geometry Perspective of Massive MIMO Systems
… the performance of a cell-free mMIMO is limited fronthaul capacity between the baseband unit and the access points (APs). In our fourth contribution, using appropriate stochastic geometry-based tools, we model and analyze the downlink of such a network for two different implementation scenarios. …
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High Capacity VCSEL Array Based Optical Wireless Links
… A VCSEL-array-based free space optical (FSO) fronthaul link with easy alignment for next-generation radio access network is demonstrated for the first time. Together these demonstrate the attractiveness of VCSEL array-based transmitters for use in optical wireless communication systems.
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Multiservice Ethernet Digital Distributed Antenna Systems
… last-mile coverage in 5G. However, the digital fronthaul interface defined in common public radio interface (CPRI), which is most widely adopted standard for C-RAN, requires very expensive infrastructures to be built due to the high data rate generated after digitisation. A solution has been …
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Scalable and Reconfigurable Optical Switches: From Network Design to System Application
… MRR switch fabric is applied in the optical fronthaul network as switching application scenarios. An envisaged converged optical network with the combination of digital radio-over-fibre (DRoF) and data service is proposed, where the silicon-based switch-and-select MRR switch fabric provides …
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Optimal Beamforming Strategies At Mmwaves For 5G+ Networks
… of using an unmanned aerial vehicle (UAV) as a fronthaul unit at mmWaves and contrasts its performance with that at the sub-6 GHz range for ad hoc communication. The ideal user grouping method in a 3-dimensional environment with UAV-assisted mmWave communications is investigated for a system …