Current Search: Radio frequency identification systems. (x)
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- Title
- Implementation of a VANET Geo-Fence Based Adaptive Traffic Light Control Scheme.
- Creator
- Edwards, Alain D., Mahgoub, Imad, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
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In this thesis we extend the VANET-based approach to counting vehicles at a traffic light by implementing a Geo-fence Based Vehicle Counting Algorithm which supports the use of RFID technology. This implementation utilizes the concept of geo-fencing to create a Zone of Interest (ZOI) that sections off a roadway that is relevant to a traffic intersection. All vehicles in this ZOI are used to determine the required length of the green-cycle time. By utilizing vehicle-to-vehicle (V2V) and...
Show moreIn this thesis we extend the VANET-based approach to counting vehicles at a traffic light by implementing a Geo-fence Based Vehicle Counting Algorithm which supports the use of RFID technology. This implementation utilizes the concept of geo-fencing to create a Zone of Interest (ZOI) that sections off a roadway that is relevant to a traffic intersection. All vehicles in this ZOI are used to determine the required length of the green-cycle time. By utilizing vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) technologies, we broadcast beacons that are propagated to all vehicles in the ZOI from the infrastructure which in this case is the traffic light controller. These beacons are used to determine the last vehicle location in the ZOI. A timing algorithm ensures that the last vehicle broadcasts first. The beacons are sent using the IEEE 1609.4 Wireless Access in Vehicular Environments Standard Vendor Specific Action (VSA) frames on the Smart Drive Initiative Vehiclular Ad Hoc Networks testbed. This work is implemented in conjunction with the Vehicular Multi-technology Communication Device (VMCD) supported by the National Science Foundation.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004720
- Subject Headings
- Traffic engineering., Radio frequency identification systems.
- Format
- Document (PDF)
- Title
- RF-based location system for communicating and monitoring vehicles in a multivehicle network.
- Creator
- Cortes, Luis Fernando, Raviv, Daniel, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
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This document reports on a hands-on project aimed at learning and experiencing the concept of system-of-systems. The motivation behind this project is to study and implement the concept of System of Systems in the generation of a RF-based communication and control complex system. The goal of this project is to develop a multi-level integrated and complete system in which the vehicles that belong to a same network can become aware of their location, communicate with nearby vehicles (sometimes...
Show moreThis document reports on a hands-on project aimed at learning and experiencing the concept of system-of-systems. The motivation behind this project is to study and implement the concept of System of Systems in the generation of a RF-based communication and control complex system. The goal of this project is to develop a multi-level integrated and complete system in which the vehicles that belong to a same network can become aware of their location, communicate with nearby vehicles (sometimes with no visible line of sight), be notified of the presence of different objects located in their immediate vicinity (obstacles, such as abundant vehicles), and generate a two dimensional representation of the vehicles’ location for a remote user. In addition, this system will be able to transmit back messages from the remote user to a specific or to all local vehicles. The end result is a demonstration of a complex, functional, and robust system built and tested for other projects to use and learn from.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00004437, http://purl.flvc.org/fau/fd/FA00004437
- Subject Headings
- Radio frequency identification system, System analysis, System design, Systems engineering -- Technological innovations
- Format
- Document (PDF)
- Title
- Study and Design of a PIFA for a Human-Implanted RFID Communication System.
- Creator
- Jean-Charles, Yves-Thierry, Ungvichian, Vichate, Florida Atlantic University
- Abstract/Description
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This effort studies the implementation of a biocompatible Planar Inverted-F Antenna (PIF A) for the Medical Instrument Communication System (MICS) frequency band of 402 to 405 MHz for RFID applications. The basic electromagnetic properties of human tissues are investigated at 403 .5 MHz. Then, the radiation characteristics of submerged wire antenna are evaluated in order to approximate the effects of multilayered media on a PIFA's performance. The PIFA is assessed using Ansoft's Finite...
Show moreThis effort studies the implementation of a biocompatible Planar Inverted-F Antenna (PIF A) for the Medical Instrument Communication System (MICS) frequency band of 402 to 405 MHz for RFID applications. The basic electromagnetic properties of human tissues are investigated at 403 .5 MHz. Then, the radiation characteristics of submerged wire antenna are evaluated in order to approximate the effects of multilayered media on a PIFA's performance. The PIFA is assessed using Ansoft's Finite Element Method based electromagnetic evaluation software, HFSS v.l 0. The electrical parameters of the antenna in relation to the surrounding environment, notably air, silicone capsule, and a three-layered bio-media, are presented. The analysis shows that the resonant frequency as well as the electrical performance of the design is significantly affected by the physical dimensions and the relative permittivity of the dielectric materials covering the antenna.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/fau/fd/FA00012529
- Subject Headings
- Radio frequency identification systems--Design, Antenna arrays--Design, Medical telematics, Health services administration--Technological innovations
- Format
- Document (PDF)
- Title
- Performance analyses of Slotted ALOHA protocol in a Weibull fading environment.
- Creator
- Rene, Jean N., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
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In past and recent literature, random access protocols have been investigated with growing interest. In particular, the Slotted ALOHA protocol has been extensively used in satellite communications, and has also attracted considerable attention in many areas of wireless communication systems, especially in the cellular mobile environment. In this thesis, we investigate the performance of Slotted ALOHA, an effective random access protocol, in a Weibull fading environment. We study the...
Show moreIn past and recent literature, random access protocols have been investigated with growing interest. In particular, the Slotted ALOHA protocol has been extensively used in satellite communications, and has also attracted considerable attention in many areas of wireless communication systems, especially in the cellular mobile environment. In this thesis, we investigate the performance of Slotted ALOHA, an effective random access protocol, in a Weibull fading environment. We study the performance metrics based on the signal-to-interference-and-noise ratio (SINR) model, in a cellular network system, assuming two captures models. The capture effect, also called co-channel interference tolerance, is the ability to correctly receive a strong signal from one transmitter despite significant interference from other transmitters. We derive closed-formed expressions and numerical evaluations for both the capture probability and the system throughput. he analytical results will be validated with computer simulations. Finally, to mitigate the effects of Weibull fading channel we also consider the effect of dual selection diversity that will increase the capture probability and the system throughput.
Show less - Date Issued
- 2013
- PURL
- http://purl.flvc.org/fcla/dt/3362567
- Subject Headings
- Multiple access protocols (Computer network protocols), Wireless communication systems, Packet switching (Data transmission), Computer simulation, Radio frequency identification systems, Computer simulation
- Format
- Document (PDF)