Location

Nessmith-Lane Atrium

Session Format

Poster Presentation

Research Area Topic:

Engineering and Material Sciences - Electrical

Co-Presenters, Co- Authors, Co-Researchers, Mentors, or Faculty Advisors

Danda B. Rawat (Georgia Southern University)

Abstract

Radio Frequency spectrums designated by the FCC broadcast almost all mediums of communication, in both licensed and unlicensed bands, within the United States. As technology rapidly grows however, the availability of open frequencies will quickly decrease. Our goal is to design and experimentally test a system that allows for secondary users to access frequency bands that are not currently being optimally used by the primary users and also determine the effects of mobility on the ability for a sensor to accurately find frequencies by determining an appropriate power level for communication. We set up experimental scenarios in order to test Universal Software Peripheral, USRP, devices as they scanned controlled frequency channels in order to determine the probability of misdetection, false alarms and overall power observed to create a threshold limit. We set up experimental scenarios in order to test Universal Software Peripheral, USRP, devices as they scanned controlled frequency channels in order to determine the probability of misdetection, false alarms and overall power observed to create a threshold limit. Our system is first designed to observe a band of frequency channels for the power in which they are being broadcasted; if the power observed is not within the designated strength, it will be considered not active. Many factors can affect the received power seen by the USRP, and because of that we observed received and transmitted power and surrounding environment in order to determine the probability of misdetections and false alarms. By creating this system, we will be able to expand the efficiency of idle channels that are reserved, but not optimally used and further expand the ability to learn and use wireless systems and signals as a viable means of communication. In this poster presentation, we present experimentally tests and show the ability of a sensor to accurately sense for active and idle channels across a radio frequency spectrum while changing the threshold limitation on noise received with the signal. This research was funded in part by the National Science Foundation (NSF).

Keywords

Georgia Southern University, Research Symposium, Frequency availability, Cognitive radio networks, Adaptive thresholds, Radio frequency spectrums

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Presentation Type and Release Option

Presentation (Open Access)

Start Date

4-16-2016 2:45 PM

End Date

4-16-2016 4:00 PM

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Apr 16th, 2:45 PM Apr 16th, 4:00 PM

Measuring Frequency Availability for Cognitive Radio Networks by Means of Adaptive Threshold

Nessmith-Lane Atrium

Radio Frequency spectrums designated by the FCC broadcast almost all mediums of communication, in both licensed and unlicensed bands, within the United States. As technology rapidly grows however, the availability of open frequencies will quickly decrease. Our goal is to design and experimentally test a system that allows for secondary users to access frequency bands that are not currently being optimally used by the primary users and also determine the effects of mobility on the ability for a sensor to accurately find frequencies by determining an appropriate power level for communication. We set up experimental scenarios in order to test Universal Software Peripheral, USRP, devices as they scanned controlled frequency channels in order to determine the probability of misdetection, false alarms and overall power observed to create a threshold limit. We set up experimental scenarios in order to test Universal Software Peripheral, USRP, devices as they scanned controlled frequency channels in order to determine the probability of misdetection, false alarms and overall power observed to create a threshold limit. Our system is first designed to observe a band of frequency channels for the power in which they are being broadcasted; if the power observed is not within the designated strength, it will be considered not active. Many factors can affect the received power seen by the USRP, and because of that we observed received and transmitted power and surrounding environment in order to determine the probability of misdetections and false alarms. By creating this system, we will be able to expand the efficiency of idle channels that are reserved, but not optimally used and further expand the ability to learn and use wireless systems and signals as a viable means of communication. In this poster presentation, we present experimentally tests and show the ability of a sensor to accurately sense for active and idle channels across a radio frequency spectrum while changing the threshold limitation on noise received with the signal. This research was funded in part by the National Science Foundation (NSF).