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.
Results
Showing 1 to 10 of 10 for “"primary network"”.
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A robust optimization approach to network design
… of logical topology design for optical backbone networks subject to traffic following a Gaussian distribution. The network design problem is broken into three tasks: traffic routing, capacity allocation, and link placement. The routing and capacity allocation problems are formulated as a convex …
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OPTIMIZING RAIL NETWORK TOPOLOGY ATTRIBUTES FOR TRACK RECLASSING, ACQUISITION AND REPURPOSING
… freight and passengers. Given the mature rail network, the network's enhancement is often done by reclassing or repurposing existing rails or acquiring new rails. This thesis focuses on optimizing the topology of a network and proposes a methodology to optimize its efficiency using track …
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Enhanced Implementations for Arbitrary-Phase Spread Spectrum Waveforms
… physical layer (PHY) security for virtually any primary network waveform. This thesis presents a series of options to enhance the implementation of arbitrary-phase chaotic sequence-based spread spectrum waveforms, including techniques to significantly reduce fallthrough correlator hardware …
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Polymer hydrogel nanoparticles and their networks
… with two levels of structural hierarchy: the primary network is crosslinked polymer chains in each individual particle, while the secondary network is a system of crosslinked nanoparticles. The covalent bonding contributes to the structural stability of the nanostructured gels, while …
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DESIGN AND ANALYSIS OF COGNITIVE MASSIVE MIMO NETWORKS WITH UNDERLAY SPECTRUM SHARING
… have gained significant attention as a new network architecture to not only achieving unprecedented spectral and energy efficiencies, but also to alleviating propagation losses and inter-user/inter-cell interference. Therefore, massive MIMO has been identified as one of the key candidate …
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Spectrum sharing for multi-user massive MIMO networks
… we propose a creative approach to advance 5G network technologies by investigating the impact of employing an underlay spectrum sharing (USS) scheme on the performance of two massive multi-input-multi-output (MIMO) networks. We explore an USS approach where a multi-user massive MIMO network …
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Optimal resource sharing and spectrum leasing in energy efficient relay-assisted networks
Assuming a bidirectional relay assisted network, we first study the problem of optimal resource sharing between two transceiver pairs. One of the pairs, referred to as the primary pair, owns the spectral resources while the other pair, called the secondary pair, is considered to own the relay …
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Innovative Coexistence: Design and Analysis of Underlay Signaling in 5G New Radio
… a very low power signal in conjunction with the primary signals across the entire frequency band of the primary signals. The secondary users of the secondary network (i.e., a wireless network consisting of primary and secondary networks) primarily utilize the underlay, which increases spectral …
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Efficient Sharing of Radio Spectrum for Wireless Networks
… both licensed and unlicensed bands for wireless networks. For licensed bands, we study two coexistence paradigms: transparent coexistence (a.k.a., underlay) and policy-based network cooperation (a.k.a., overlay). These two paradigms can offer significant improvement in spectrum utilization and …
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Artificial Neural Networks in Stock Return Prediction: Testing Model Specification in a Global Context
… research investigates whether artificial neural networks which make use of firm specific fundamental and technical factors can accurately predict the returns of a sample of several large-cap stocks from various markets across the globe. This study also explores which hidden layer configuration …