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 20 of 28 for “"Cellular Communications"”.
-
Dynamic resource allocation in CDMA cellular communications systems
… resource utilization is the primary problem in cellular communication systems. In this thesis, we combine the main resource issues for CDMA systems, admission control and power control, in a single framework. The framework uses a formulation that is general enough to incorporate all significant …
-
Resource Allocation and Adaptive Antennas in Cellular Communications
The rapid growth in demand for cellular mobile communications and emerging fixed wireless access has created the need to increase system capacity through more efficient utilization of the frequency spectrum, and the need for better grade of service. In cellular systems, capacity improvement can be …
-
Channel allocation and admission control in cellular communications networks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
-
An analysis of a broadband multicarrier CDMA cellular communications system
… resistant, high data rate, non-exploitable communications. The large volumes of video and data information, i.e. Internet access, video teleconferencing and data transfer, required to support the war fighter within a Joint Task Force demands technologies that reduce the interference imposed …
-
Modeling the Use of an Airborne Platform for Cellular Communications Following Disruptions
… can be severely damaged, hampering telecommunications. An Airborne Communications Network (ACN) allows for rapid and accurate information exchange that is essential for the disaster response period. Access to information for survivors is the start of returning to self-sufficiency, …
-
Resource Allocation and End-to-End Quality of Service for Cellular Communications Systems in Congested and Contested Environments
… the concept of radio resource allocation for cellular communications systems operating in congested and contested environments with an emphasis on end-to-end quality of service (QoS). The radio resource allocation is cast under a proportional fairness formulation which translates to a convex …
-
The Performance Implications of the Evolution of Managerial Capabilities in the Context of Industry Evolution
… I compile a list of early entrants into the cellular communications service industry before 1999, and I examine the extent of differences in the development of managerial capabilities and performance among entrants over time. By viewing the selection mechanism at the industry level as …
-
Self-Organizing Networks Prospects for Group Scheduling for Disaster Relief and Public Safety Communications in Cellular Networks
The demand for cellular communications is anticipated to continue its hasty growth in the forthcoming future, triggered by new bandwidth hungry applications such as voice over LTE, high-definition video streaming, and multimedia file sharing in mobile phones. This has placed enormous pressure on …
-
Evaluation of several techniques for enhancing speech degraded by additive noise in mobile radio environments
… speech degraded by additive noise in mobile cellular communications. The primary goal of this multi-stage study was to examine adaptive noise cancellation techniques in which one microphone is used to measure the speech plus noise signal and another microphone is used to form an estimate of …
-
Undersea navigation of a glider UUV using an acoustic communications network
… reference points. The fixed grid provides a cellular communications infrastructure for command & control and data telemetry. In turn, the UUV can support the fixed grid by physically redistributing large quantities of data throughout the network or for breaching the sea surface and acting as …
-
An implementation of an AMPS digital base station with adaptive Automatic Gain Control
… for an Advanced Mobile Phone Service (AMPS) cellular system, and the associated problem of choosing an appropriate Analog-to-Digital (ADC) converter. The probability density function of the voltage across a cellular receiving antenna is shown to be dependent on various cellular parameters. …
-
A multistage RAKE receiver for CDMA systems
… of a Code Division Multiple Access (CDMA) cellular communications system. This receiver combines the interference rejection capability of multiuser receivers with the robust performance of a RAKE receiver in the presence of multipath interference. Unlike previous multiuser receiver designs, …
-
Single Cell RNA Sequencing Data Analysis and Applications in Caenorhabditis Elegans Embryo Development
… we used scRNA-seq datasets to study the global cellular communications in the Caenorhabditis elegans (hereinafter “C. elegans”) embryo. As a key genetic model organism, especially for embryo development, this nematode has an invariant cell lineage which was fully mapped, making it the ideal …
-
The application of multiuser detection to cellular CDMA
… detection to Code Division Multiple Access for cellular communications. This investigation focuses on the use of multiuser receivers at the base station of mobile radio systems. The first two chapters are dedicated to multiuser detection in general. An extensive literature survey is performed on …
-
Towards realizing the internet-of-things vision : in-body, homes, and farms
… themselves, for example, in next generation cellular communications.
-
Transmitter precoding for multi-antenna multi-user communications
… wireless sensor networks and existing wireless cellular and ad hoc networks motivate the design of low-power receivers. Multi-user interference drastically reduces the energy efficiency of wireless multi-user communications by introducing errors in the bits being detected at the receiver. …
-
Performance analysis of cooperative communication for wireless networks
… need has motivated the transition of wireless communications from a fixed infrastructure based cellular communications technology to a more pervasive adhoc wireless networking technology. Challenges still remain in wireless adhoc networks in terms of meeting higher capacity demands, improved …
-
Generic Adaptive Handoff Algorithms Using Fuzzy Logic and Neural Networks
… the capacity and Quality of Service (QoS) of cellular systems. This research presents novel approaches for the design of high performance handoff algorithms that exploit attractive features of several existing algorithms, provide adaptation to dynamic cellular environment, and allow systematic …
-
Random Linear Network Coding Enabled Routing Protocol in UAV Swarm Networks: Development, Emulation, and Optimization
… it can provide robust and efficient wireless communications in some unique scenarios, such as emergency communications, hotspot region coverage, sensor networks, and vehicular networks. Therefore, UAV networks have attracted more and more attention from commercial and military; however, many …
-
Mobility Management in 5G Heterogeneous Networks: A Handover Scheme for Reducing Handover Failures
Mobile/cellular communications have become very popular and advanced significantly in recent decades. Communications will inevitably evolve into the next generation of wireless communications, in which users will be connected via heterogeneous networks. Small cell (SC)-based ultra-dense …
Page 1 of 2