Projects:	Multicasting Data over Packet Radio Networks An Evaluation of the X-PicMap File Format for Transmitting Medical Radiography over Packet Radio Networks Modeling Data Multicasts over Amateur Packet Radio Networks A Subjective Metric to Evaluate the Quality of X-BitMap Formatted Projectional Radiography Evaluation of TCP Reno and UDP Performance over Simulated 2-Meter Packet Radio Networks Evaluation of Computer Network Simulator Installation and Use Improved Near-Earth Internet Data Transmission Using New Multi-Layer OSI Protocol Designs
Project Title:	Multicasting Data over Packet Radio Networks. (back to top)
Personnel:	Lab members working on this research project include Dr. Wiedemeier.
Dates:	June 2008 - Present
Abstract:	For this project, we propose to investigate how best to multicast data over packet radio networks.
Publication:	Paul D. Wiedemeier, "Using Udpcast to IP Multicast Data over Packet Radio Networks", Proceedings of the 27th ARRL and TAPR Digital Communications Conference, September 2008.
Presentation:	Paul D. Wiedemeier, "Using Udpcast to IP Multicast Data over Packet Radio Networks", 27th ARRL and TAPR Digital Communications Conference, Chicago, Illinois, September 2008.
Project Title:	An Evaluation of the X-PicMap File Format for Transmitting Medical Radiography over Packet Radio Networks (back to top)
Personnel:	Lab members working on this research project include Ms. Tiffany Riley and Dr. Wiedemeier.
Dates:	August 2008 - Present
Abstract:	For this project, we propose to investigate how random and burst-oriented bit errors, which occur with high probability when data are transmitted over wireless transmission media using UDP-oriented protocols, effect human perceptions of quality as it relates to medical radiography, including projectional radiography (i.e. X-Rays), stored using the X-Pixmap (XPM) file format.
Project Title:	Modeling Data Multicasts over Amateur Packet Radio Networks (back to top)
Personnel:	Lab members working on this research project include Mr. Amir Shrestha and Dr. Wiedemeier.
Dates:	August 2008 - Present
Abstract:	For this project, we will model the multicast transmission of data over amateur packet radio networks. Specifically, we will use the ns-2 network simulator to obtain multicast data transmission times over amateur packet radio networks comprised of terrestrial, near-space, low earth orbit (LEO), and geostationary earth orbit (GEO) digital repeaters. The data obtain will provide insight about how existing and future multicast data transmission software should operate. We will also model mathematically the same multicast data transmissions.
Project Title:	A Subjective Metric to Evaluate the Quality of X-BitMap Formatted Projectional Radiography (back to top)
Personnel:	Lab members working on this research project include Ms. H. Nikki Simmons and Dr. Wiedemeier.
Dates:	August 2007 - Present
Abstract:	We will evaluate subjectively human perceptions of quality as it relates to X-BitMap formatted projectional radiography (i.e. X-Ray images) that have been modified to exibit both random and burst-orinted bit errors. In the future, we will evaluate objectively the quality of the same X-BitMap formated projectional radiography when transmitted over actual 2-meter amateur packet radio networks.
Project Title:	Evaluation of TCP Reno and UDP Performance over Simulated 2-Meter Packet Radio Networks (back to top)
Personnel:	Lab members working on this research project include Dr. Wiedemeier.
Dates:	July 2007 - Present
Abstract:	For our project, we propose two components. We first propose to evaluate the performance of transport layer protocols (i.e. TCP Reno and UDP) when used to transmit medical imagery over a simulated 2-meter amateur packet radio. Second, we propose to compare the data obtain through simulation against data obtain using an actual 2-meter amateur packet radio network. The data generated by the two research components will provide insight into how best to modify connection-less and/or connection-oriented transport layer protocols to decrease the time required to transmit medical imagery over actual 2-meter amateur packet radio networks.
Publications:	Paul D. Wiedemeier, "Transmitting Medical Imagery over 2-Meter Amateur Packet Radio Networks using TCP Reno and UDP" , Proceedings of the 2008 IEEE Aerospace Conference, Institute of Electrical and Electronics Engineers, CD-ROM ISBN: 978-1-4244-1487-1, Paper #1067, Big Sky, Montana, March, 2008.
	Paul D. Wiedemeier, "Performance Modeling of TCP and UDP over Packet Radio Networks using the ns-2 Network Simulator", Proceedings of the 26th ARRL and TAPR Digital Communications Conference, September 2007.
Presentation:	Paul D. Wiedemeier, "Performance Modeling of TCP and UDP over Packet Radio Networks using the ns-2 Network Simulator", 26th ARRL and TAPR Digital Communication Conference, Amateur Radio Relay League and Tucson Amateur Packet Radio, Inc., Windsor Locks, Connecticut, September 2007.
Project Title:	Evaluation of Computer Network Simulator Installation and Use (back to top)
Personnel:	Lab members working on this research project include Dr. Wiedemeier.
Dates:	August 2007 - Present
Abstract:	For our project, we will evaluate subjectively the ease of installing and using various computer network simulators, including ns-2 and OpNet.
Project Title:	Improved Near-Earth Internet Data Transmission Using New Multi-Layer OSI Protocol Designs (back to top)
Personnel:	Lab members working on this research project include Dr. Wiedemeier.
Dates:	January 2006 - March 2007
Abstract:	This paper presents the designs for new multilayer open systems interconnect protocols that improve Internet data transmission within a hybrid communication network consisting of a geo-stationary earth orbit satellite and a terrestrial channel. These new designs span the transport, network, and data-link open systems interconnect layers and decrease the time required to transmit large data sets over a hybrid communication network compared to the Transmission Control Protocol variant Reno and frequency division multiplexing over a geo-stationary earth orbit satellite. This paper outlines the functional details for these news designs, provides simulated data transmission performance characteristics for all designs, and concludes with justifications for and benefits related to our research.
Publication:	Paul D. Wiedemeier and Harry W. Tyrer, "Improved Near-Earth Internet Data Transmission Using New Multi-Layer OSI Protocol Designs", Proceedings of the 2007 IEEE Aerospace Conference, Institute of Electrical and Electronics Engineers, CD-ROM ISBN: 1-4244-0525-4, IEEE Catalog Number: 07TH8903C, Paper #1060, March, 2007.
Presentation:	Paul D. Wiedemeier and Harry W. Tyrer, "Improved Near-Earth Internet Data Transmission Using New Multi-Layer OSI Protocol Designs", 2007 IEEE Aerospace Conference, Institute of Electrical and Electronics Engineers, Presentation 4.0301, Big Sky, Montana, March, 2007.