Search Results
The search returned 1,237 publication(s) on its.ntia.gov.
Out-of-band emissions (OOBE) measurements in the 36–37 GHz band were performed on a commercially available outdoor 5G millimeter-wave (mmWave) gNodeB operating in the n260 band (37–40 GHz). The 5G mmWave gNodeB is part of the Institute for Telecommu...
We introduce Dataset Concealment (DSC), a rigorous new procedure for evaluating and interpreting objective speech quality estimation models. DSC quantifies and decomposes the performance gap between research results and real-world application requir...
This memorandum provides mathematical relationships for agreement between true measurand values, means of multiple imperfect measurements, and resampled measurement means. Agreement is quantified here in terms of Pearson correlation coefficient (PCC...
The Federal Communications Commission in the U.S. assigned 30 MHz from the 5895–5925 MHz band for vehicular communication. Adjacent bands, i.e., from 5850–5895 MHz and 5925–6425 MHz, were designated for unlicensed devices. In this study, the effect ...
Spectrum and noise measurements were conducted in 2024 at McMurdo Station, Antarctica. The measurement system and select results are presented for two sites. A site selection criterion is introduced and used to evaluate site suitability for a High F...
Source localization is the process of locating a source of electromagnetic waves or acoustic waves from passive measurements of the emitted fields made on distributed receivers. This is an important problem for both military and civilian application...
The restoration of degraded audio signals is often performed on complex-valued frequency-domain (FD) representations. This requires manipulation of either magnitudes and phases or real and imaginary parts. In general, these manipulations do not prod...
The results of a thorough comparative analysis of alternative graphical prediction methods for multiple knife-edge diffraction are presented and compared to the method developed by Vogler. The Vogler multiple knife-edge diffraction loss is rigorous ...
The term ecological validity is widely used across IEEE publications, but its definition and application remain inconsistent and ambiguous. This paper explores how conflicting definitions of ecological validity lead to confusion about experimental c...
The Institute for Telecommunication Sciences (ITS) performed high frequency (HF) band (3–30 MHz) radio noise power measurements at six locations in the McMurdo Station (MS), Antarctica (AQ), area and one location at the Black Island Telecommunicatio...
The increasing number of traffic fatalities motivates adoption of vehicular communication technologies. Long Term Evolution (LTE) vehicle-to-everything (V2X) technology automatically exchanges information among and between vehicles and infrastructur...
The vision of the 5G Challenge competitions was to accelerate adoption of 5G open interfaces, interoperable subsystems, and multi-vendor solutions by fostering a large, vibrant, and growing vendor community dedicated to advancing 5G interoperability...
This paper describes a first step toward correlating publicly available data from the Next Generation Weather Radar (NEXRAD) system with electromagnetic propagation measure-ments. We demonstrate the successful extraction of data from a specified vol...
One mechanism to provide worldwide internet coverage is to deploy low Earth orbit satellite megaconstellations. Increasing the number of satellites in space increases the risk of harmful interference on radio astronomy observatories (RAOs). In this ...
Over-the-radio-horizon propagation is of particular interest to today's telecommunication engineers, for both network planning and interference analysis. At distances over 100 km, the primary mechanism for propagation is the forward scattering of th...
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-l...
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 ...
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 ...
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 modulation spectra as r...
We develop two complementary advances for training no reference (NR) speech quality estimators with independent datasets. Multi-dataset finetuning (MDF) pretrains an NR estimator on a single dataset and then finetunes it on multiple datasets at once...