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 81 for “"wireless system"”.
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A wireless system for crack monitoring in concrete structures
1 PDF file (vi, 48 pages)
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Direction Finding and Beamforming Techniques using Antenna Array for Wireless System Applications
… applications such as tracking of targets, wireless mobile communications, radar systems, etc. This thesis firstly investigates different types of AOA and beamforming techniques. A comprehensive comparison between the common AOA algorithms is performed to evaluate the estimation accuracy and …
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Mobile Wireless System Interworking with 3G and Packet Aggregation for Wireless LAN
… the efficient transmission of data within a wireless local area network (WLAN) system. A simulation model was developed to study the performance of our protocol, AGG-MAC (aggregated medium access control). AGG-MAC is a simple and elegant medium access control (MAC) protocol designed to …
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Design and verification of SC-FDE/OFDM communication schemes for millimetre-wave wireless system using FPGA technologies
… successfully interfaced with a 64.8 GHz radio system which was built using commercially available discrete RF modules. The back-to-back performance of both baseband transceiver and the 64.8 GHz WPAN has been validated. <br/><br/>The performance of the implemented transceiver has been …
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Integration of Graphical User Interface and Data Visualization Tools in a Problem Solving Environment for Wireless System Design
… the problem solving environment "Site-Specific System Simulator for Wireless System Design" (S4W) developed by CS and ECE faculty and students at Virginia Tech. S4W integrates visualization and computational tools with a high level user interface. The objective of this PSE is to improve the …
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Embedded Wireless Data Acquisition System
… signal conditioning and recording equipment. A wireless neural signal recording system is desirable because it removes the cumbersome wires from the animal, allowing it to roam more freely. The result is an animal that is more able to behave as it would in its natural habitat, thus opening the …
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Wireless local loop and packet radio technology for developing communities
… 8 relatively fast roll-out at low-cost. Modern wireless system claim to offer quick and easy deployment. However, in many cases the wireless system deployment is delayed because adequate radio plans have to be designed, and they are not optimized for Internet and computer communications. …
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Courseware and curriculum development for a wireless electronics class
The design of basic wireless building blocks (such as oscillators, amplifiers, and modulation circuits) and modern encoding techniques such as CDMA (Code Division Multiple Access) are in high demand by employers of recent graduates. This thesis sets forth a lesson plan and laboratory kit design to …
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Data and Computation Modeling for Scientific Problem Solving Environments
… (PSEs). A PSE is viewed as a software system that provides (i) a library of simulation components, (ii) experiment management, (iii) reasoning about simulations and data, and (iv) problem solving abstractions. Three specific ideas, in functionalities (ii)-(iv), form the contributions of …
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SCHEDULING IN PACKET SWITCHED CELLULAR WIRELESS SYSTEMS
In cellular wireless networks where users have independent fading channels, throughput for delay tolerant applications has been greatly increased on the downlink by using opportunistic schedulers at the base station. These schedulers exploit the multiuser diversity inherent in cellular systems. An …
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Study of Optical OFDM System for Wireless LAN Applications
… technique (MC) is used in hybrid optical-wireless system designs because it has the best spectral efficiency to radio frequency (RF) interference and lower multipath distortion. In this dissertation, a study and evaluation of optical OFDM based wireless local area network (W-LAN) systems …
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Wireless Telemetry System for Implantable Sensors
… effects of the treatments, innovative telemetry systems are developed, that enable remote real-time cardiac monitoring. The latest research in the field of cardiac monitoring has revealed two major limitations with wireless implantable systems: a) the current size of implantable electronics …
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Performance of defected ground structure for rectangular microstrip patch antenna
In wireless communications systems, harmonics and unwanted frequency other than designed one becomes a dominant factor in limiting quality and capacity of transmitted or received signal. Rectangular microstrip patch antenna (RMPA) is designed in order to obtain the required parameter responses at 2 …
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Standalone Antenna Demonstration System
Antenna systems play a significant role in today’s electronic communications. They are essential for cell phones, satellites, radio, and radar among many other important applications. This paper describes the design, assembly, and operation of an antenna demonstration system designed to instill …
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A Comprehensive Systems Testing Plan for the Smart Phone Assisted Rapid Communication and Control System (SPARCCS)
… Phone Assisted Rapid Communication and Control System (SPARCCS) is a mobile device based wireless system that enables rapid communications in the military field or during civilian emergency operations by facilitating teams to capture images and share information with one another and with a …
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A Comprehensive In-Building and Microcellular Wireless Communication System Design Tool
Indoor wireless communication systems are becoming increasingly prevalent in work environments. The need to quickly and efficiently provide in-building and microcellular coverage without sacrificing quality is critical to cellular and emerging personal communication system (PCS) operators. …
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Antenna Selection for a Public Safety Cognitive Radio
Ever since the dawn of radio communication systems, the antenna has been the key component in the construction and performance of every wireless system. With the proliferation of new radio systems, a cognitive radio is a radio that has the capability to sense, learn, and autonomously adapt to its …
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Development of computer controls for a goniophotometer
… of the field of daylighting. The Heliodome system developed in the Building Technology department is a new type of goniophotometer for analyzing the spectral and angular properties of these materials. The Heliodome system relies on two cameras to transmit images to a user interface in order …
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