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Radio Spectrum for the Internet of Things

“Wireless Telegraphy” 1899|Guglielmo Marconi

 

Analysis of the FM Radio Spectrum for Secondary Licensing of Low-Power Short-Range Cognitive Internet of Things Devices

Derek T. OtermatIvica KostanicCarlos E. Otero

Electrical and Computer Engineering Department, Florida Institute of Technology

 

Abstract. The analysis presented in this paper indicates that the FM radio spectrum is underutilized in the areas of the continental United States that have a population of 100000 or less. These locations have vacant FM radio spectrum of at least 13 MHz with sufficient spectrum spacing between adjacent FM radio channels. The spectrum spacing provides the required bandwidth for data transmission and provides enough bandwidth to minimize interference introduced by neighboring predicted and unpredicted FM radio stations and other low-power short-range Internet of Thing (IoT) devices. To ensure that low-power short-range IoT devices maintain reliable communications vacant radio spectrum, such as the FM radio spectrum in these areas, will need to be used through cognitive radio.

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Related:

Northwestern University: Internet of Things and Edge Computing

Duke University: Edge Computing

National Institutes of Health: Design of Edge Computing Online Classroom Based on College English Teaching

LIVE: KRUA 88.1 FM

Standards Michigan: Radio

University of Alaska Anchorage Facilities and Campus Services

Federal Communications Commission: Low Power FM Radio

WSRN 91.5 FM

Standards Pennsylvania

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The “Worldwide Swarthmore Radio Network” is Swarthmore College’s official campus radio station. It broadcasts out of the suburban Philadelphia borough of Swarthmore, Pennsylvania.

Prior to the 1970s, WSRN operated as a carrier signal broadcast to the campus of Swarthmore College only. The station went on the air with 10 watts on October 15, 1972.  Following efforts by the Federal Communications Commission to encourage as many Class D stations as possible to increase power, a campaign was raised by the students of the college, and in the late 1970s, the FCC granted a license for a 110-watt, directional, transmission.

Programming has been eclectic from the 1970s on. Station programming is diverse; music spans “world,” hip hop, blues, folk, rock, pop, R & B, and classical. Talk and comedy programs comprise much of the weekend line-up. Notably “Funk” which ran from fall 2012 to spring 2014 Friday mornings from midnight to 2AM.

In 1986, the main on-air studio was completely refurbished, with a new control panel, turntables, microphones, and wiring installed. 1998 saw the rewiring and modernization of the production studio and the construction of an acoustically isolated sound studio connected to the production studio.

Students have always manned the soundboard, and so, during most summers, the station is dark.  Following the COVID-19 pandemic, the radio station had periods of limited broadcasting. During the 2021-2022 academic year, a significant effort by students, faculty, staff, and community members was successfully carried out to get the station back up to an operational state. As of April 1, 2022, the station has resumed broadcasting.

Global Positioning System: A Generation of Service to the World

Citizens of the Earth depend upon United States leadership in this technology for several reasons:

Development: The GPS was originally developed by the US Department of Defense for military purposes, but it was later made available for civilian use. The US has invested heavily in the development and maintenance of the system, which has contributed to its leadership in this area.

Coverage: The GPS provides global coverage, with 24 satellites orbiting the earth and transmitting signals that can be received by GPS receivers anywhere in the world. This level of coverage is unmatched by any other global navigation system.

Accuracy: The US has worked to continually improve the accuracy of the GPS, with current accuracy levels estimated at around 10 meters for civilian users and even higher accuracy for military users.

Innovation: The US has continued to innovate and expand the capabilities of the GPS over time, with newer versions of the system including features such as higher accuracy, improved anti-jamming capabilities, and the ability to operate in more challenging environments such as indoors or in urban canyons.

Collaboration: The US has collaborated with other countries to expand the reach and capabilities of the GPS, such as through the development of compatible navigation systems like the European Union’s Galileo system and Japan’s QZSS system.

United States leadership in the GPS has been driven by a combination of investment, innovation, collaboration, and a commitment to improving the accuracy and capabilities of the system over time.

Timing Applications: GPS.GOV

Suggested Functional Specifications for a GPS-Synchronized Clock System using Network Time Protocol and Power over Ethernet

Construction Specifications for Exterior Clocks

Seamless positioning system using GPS and beacons for community service robot

Global Positioning System: Monitoring the Fuel Consumption in Transport Distribution

Beaver Radio Network FM 90 (KBSB 89.7 FM).

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