Recent Publications
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Frank H. Sanders et al., “NTIA Case Study: Adjacent-Band Coexistence Between 5G Base Station Transmitters and Air Traffic Control Radar Receivers,” Technical Report NTIA TR 25-577, December 2024
The introduction of Fifth Generation New Radio (5G NR) base station transmitters into 2590–2690 MHz in the U.S., adjacent to the spectrum band 2700–2900 MHz used by air traffic control radars, has resulted in interference effects in some safety-of-li...
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Douglas M. Boulware and Anthony W. Romaniello, “An Analysis of Aggregate CBRS SAS Data from April 2021 to July 2024,” Technical Report NTIA TR-25-575, November 2024
This report presents an analysis of aggregate Citizens Broadband Radio Service (CBRS) Spectrum Access System (SAS) data reported quarterly from April 1, 2021, to July 1, 2024. The data provide insights into the growth of CBRS, the impact of dynamic s...
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Frank H. Sanders, “Adventures in Radar Spectrum and Radar Coexistence in Today’s World,” Special Publication NTIA SP-25-576, November 2024
Of all the radio system types that occupy the electromagnetic spectrum, perhaps none are so important while also being so generally misunderstood, even within technical communities, as radars. Radar technology, the revolutionary innovation that the A...
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Stephen D. Voran and Jaden Pieper, “A Powerful, Fixed-Size Modulation Spectrum Representation for Perceptually Consistent Speech Evaluation,” Technical Memorandum NTIA TM-24-274, September 2024
We develop the wideband fixed-size modulation spectra (FMS) and show that they contain the necessary information to perform perceptually consistent evaluation of speech. We compare FMS with the already established frame-based modula-tion spectra as r...