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 15 of 15 for “"Space Division"”.
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Robust Data Center Network Design using Space Division Multiplexing
… is so evident in future, is applications of Space Division Multiplexing, where we explore the remaining unused domain that is the spatial domain. Space Division Multiplexing using multi-core fibers (MCFs), and few-mode fibers (FMFs) has been studied in our work to enhance the data-carrying …
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Optical Fibers for Space-Division Multiplexed Transmission and Networking
… satisfy exponentially growing capacity demand. Space-division multiplexing (SDM) appears to be the only way able to dramatically improve the transmission capacity, for which, novel optical fiber is one of the key technologies. Such fibers must possess the following characteristics: 1) high mode …
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Romaria, festa e turismo: relações entre nativos e romeiros na festa de Nossa Senhora das Vitórias em Carnaúba dos Dantas (Rio Grande do Norte)
… Mount of the Rooster, established as a religious space. The main pillar got the party, the pilgrimage, tourism and trade carried out on site as well as relations between the natives and visitors actors that are established from the contact between them. This work seeks to understand the nuances …
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Integrated broadband microphotonic beamformer for adaptive nulling in smart antennas
… signals (null steering), which is also known as Space Division Multiple Access (SDMA). SDMA systems allow significant improvement in the area of capacity, signal bandwidth, signal-to-interference ratio, and frequency reuse. Due to the increasing complexity of the smart antennas system, …
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Optimal Hybrid MIMO Beamforming Designs for Energy-Efficient Communication Systems
… also compares the performance of CAP-MIMO with space division multiple access (SDMA) and time division multiple access (TDMA) approaches. The third chapter presents the energy efficiency formulation for CAP-MIMO, also utilizing EIT, and analyzes simulation results to validate the proposed …
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Resource allocation and modeling in spectrally and spatially flexible optical transport networks
… ones from literature. For the longer term, Space Division Multiplexing (SDM) is a promising solution to overcome the looming fiber capacity crunch, and, perhaps more importantly, can offer a beneficial ratio between the expected capacity gains and the resulting increase in the cost of the …
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Robot-assisted acoustic vortex tweezers
… Transformable acoustic clover beams generated by space-division harmonic holography for fourdegree-of-freedom (4-DoF) contactless object manipulation. This work addresses existing knowledge gaps in acoustic manipulation by integrating acoustic vortex beams with robotic arms and linear motion …
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Gender and Space in Jordan: Boundaries and Power in a Middle Eastern Society
… facets in the relationships between gender and space in Jordan come to light throughout this study, highlighting foremost the contentious nature running throughout the relationships between men and women as each gender attempts to shape, expand, and solidify the accepted gender roles and realms …
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Cross-Layer Optimization: System Design and Simulation Methodologies
… severely limit system performance as the entire space around a node up to its radio range is seen as a single logical channel. In this research a MAC protocol is studied that exploits space division multiple access at the physical layer. This is a strong example where physical and MAC design must …
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The Design of Ad Hoc Networks with Minimum Power and Maximum Battery Life
… and 133% over the minimum power routing scheme. Space, frequency and time division multiple access schemes are analysed for supporting multiple simultaneous transmissions in the network. Space division multiplexing allows multiple access without affecting the bandwidth or data rate, but five to …
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Exploiting Spatial Degrees-of-Freedom for Energy-Efficient Next Generation Cellular Systems
… unequal power allocation of orthogonal frequency division multiplexing (OFDM), the drain efficiency of the PA is determined by the PAPR and hence by the power distribution. This research proposes a PAPR-aware energy-efficient resource allocation scheme for joint orthogonal frequency division …
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OFDM turbo transceivers
… in the context of Orthogonal Frequency Division Multiplexing (OFDM). More explicitly, powerful turbo transceivers invoking Sphere Packing (SP) modulation are designed using EXtrinsic Information Transfer (EXIT) charts for both single-user and multi-user transmission. In order to provide …
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Novel techniques in large scaleable ATM switches
… interconnection network. A variety of space division switches are then considered which leads to a discussion of the hypercube fabric, (a novel switching technique). The hypercube fabric achieves good performance with an O(N.log₂N)²) scaling. The output module, resequencing, cell …
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Digital equalization techniques for the compensation of nonlinear impairments in long-haul coherent optical communication systems
… transmission reach. Over the past few years, Space Division Multiplexing (SDM) utilizing multicore or Few- Mode Fibers (FMFs) have been studied intensively as a potential candidate for increasing link capacity beyond 1 Tb/s. It is anticipated that the deployment of SDM along with the …
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High speed optical communication systems: From modulation formats to radically new fibres
… these components. The world's first wavelength division multiplexed (WDM) subsystem directly implemented at 2μm is presented along with WDM transmission over hollow-core photonic band-gap fibre at 2μm. References: [1]P. P. Mitra, J. B. Stark, Nature, 411, 1027-1030, 2001 [2] A. D. Ellis et al., …