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Software Defined Applications in Cellular and Optical Networks

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Small wireless cells have the potential to overcome bottlenecks in wireless access through the sharing of spectrum resources. A novel access backhaul network architecture based on a Smart Gateway (Sm-GW) between the small cell base stations, e.g., LTE eNBs, and the conventional backhaul gateways, e.g., LTE Servicing/Packet Gateways (S/P-GWs) has…

Small wireless cells have the potential to overcome bottlenecks in wireless access through the sharing of spectrum resources. A novel access backhaul network architecture based on a Smart Gateway (Sm-GW) between the small cell base stations, e.g., LTE eNBs, and the conventional backhaul gateways, e.g., LTE Servicing/Packet Gateways (S/P-GWs) has been introduced to address the bottleneck. The Sm-GW flexibly schedules uplink transmissions for the eNBs. Based on software defined networking (SDN) a management mechanism that allows multiple operator to flexibly inter-operate via multiple Sm-GWs with a multitude of small cells has been proposed. This dissertation also comprehensively survey the studies that examine the SDN paradigm in optical networks. Along with the PHY functional split improvements, the performance of Distributed Converged Cable Access Platform (DCCAP) in the cable architectures especially for the Remote-PHY and Remote-MACPHY nodes has been evaluated. In the PHY functional split, in addition to the re-use of infrastructure with a common FFT module for multiple technologies, a novel cross functional split interaction to cache the repetitive QAM symbols across time at the remote node to reduce the transmission rate requirement of the fronthaul link has been proposed.
ContributorsThyagaturu, Akhilesh Thyagaturu (Author) / Reisslein, Martin (Thesis advisor) / Seeling, Patrick (Committee member) / Zhang, Yanchao (Committee member) / Tepedelenlioğlu, Cihan (Committee member) / Arizona State University (Publisher)
Created2017
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The International Foundations of Russian Gay Communities and Civil Society

Description
Civil society, when taken as a whole, is a complex phenomenon that incorporates several movements and can be accompanied with international support. For instance in 1987, 40 NGOs (non-governmental organizations) were registered by the government, and within 25 years, the number has increased to 300,000 in the present day Russian…

Civil society, when taken as a whole, is a complex phenomenon that incorporates several movements and can be accompanied with international support. For instance in 1987, 40 NGOs (non-governmental organizations) were registered by the government, and within 25 years, the number has increased to 300,000 in the present day Russian Federation. These numbers only include registered organizations, and do not count unregistered organizations, as approved under article 3 "Public organizations...can function without state registration and acquiring of the rights of registered legal body," or organizations that have been refused registration, such as the "Marriage Equality Russia" NGO that was denied registration in 2010. Thus the total amount of NGOs is significantly higher than 300,000. Every one of these NGOs "contribute to Russia‘s economic, political and social life in numerous ways and provide opportunities for citizens to help create better communities and elevate their voices" ("USAID in Russia"). With hundreds of thousands of organizations attempting to make a better society, they are creating a Russian civil society, one that could use the experience of countries with already well-established civil societies (Walzer). Walzer, however, notes the importance for civil society of political engagement with the state (317). In this thesis, I argue that the LGBT movement in Russia today has set an important example for other groups in civil society through its willingness to take on the Russian state through demonstrations and to use the state through the EU Court of Human Rights in Strasbourg.
ContributorsMark, Daniel (Author) / Hoogenboom, Hilde (Thesis director) / Hagen, V. Mark (Committee member) / Siroky, David (Committee member) / Barrett, The Honors College (Contributor) / College of Liberal Arts and Sciences (Contributor)
Created2012-12
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The Internet and Ethnic Riots

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In this dissertation i argue that the internet has a positive impact on the likelihood of ethnic riots. To make this argument I put forward three major claims. First, ethnic riots are best understood as performances that aim to clarify ambiguities in the social order. Second, communication technologies structurally constrain…

In this dissertation i argue that the internet has a positive impact on the likelihood of ethnic riots. To make this argument I put forward three major claims. First, ethnic riots are best understood as performances that aim to clarify ambiguities in the social order. Second, communication technologies structurally constrain the flow of information passing through them. Third, the internet is unique among modern Information Communication Technologies in its capacity for inducing ethnic riots. I provide two types of empirical evidence to support these claims: a cross-national analysis of internet penetration and a case study of India. The former provides evidence for the central claim, finding that the internet has a positive effect on the likelihood of ethnic conflict after a threshold of internet penetration is met. The latter sketches the limits of the proposed theory, finding that internet penetration decreased the likelihood of ethnic riots in India. I argue this is a result of welfare contextualization of the internet.
ContributorsAtcha, Haroon (Author) / Siroky, David (Thesis advisor) / Kittilson, Miki (Committee member) / Thomas, George (Committee member) / Arizona State University (Publisher)
Created2020