ITS: The Nation’s Spectrum and Communications Lab
Our mission is to ADVANCE innovation in communications technologies, INFORM spectrum and communications policy for the benefit of all stakeholders, and INVESTIGATE our Nation’s most pressing telecommunications challenges through research that employees are proud to deliver. Learn more about ITS on our YouTube Channel or read about our research programs in the Technical Progress Report.
News
July 22, 2024
ITS has released a new technical memorandum titled “Joint Analyses of No-Reference Speech Quality Estimation Tools and Conference Speech Recorded in Diverse Real-World Conditions.”...
April 1, 2024
ITS, in collaboration with the U.S. Department of Defense’s FutureG Office, hosted the RAN Intelligent Controller (RIC) Forum in Dallas, Texas, from March 26 to 28.
The 2024 RIC Forum brought government, military, telecommunications...
November 13, 2023
The goal of the two-year 5G Challenge was to accelerate the adoption of 5G open interfaces, interoperable subsystems,...
Recent Publications
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Conference Paper : AlignNet: Learning dataset score alignment functions to enable better training of speech quality estimators July 2024, Jaden Pieper and Stephen D. Voran. 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 a...
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Conference Paper : Why Some Audio Signal Short-Time Fourier Transform Coefficients Have Nonuniform Phase Distributions July 2024, Stephen D. Voran. The short-time Fourier transform (STFT) represents a window of audio samples as a set of complex coefficients. These are advantageously viewed as magnitudes and phases and the overall distribution of ...
This Month in ITS History
July 1968: Irregular Terrain Model Published
In July 1968 one of ITS’s most famous publications was released. “Prediction of Tropospheric Radio Transmission Loss Over Irregular Terrain: A Computer Model” described a software product based on the groundbreaking work done for Tech Note 101 three years earlier. The FORTRAN program created by ITS engineers Anita Longley and Phil Rice is better known as the Irregular Terrain Model (ITM) or simply Longley-Rice. This was one of the first computerized models of radio propagation that could be used effectively in the real world. It incorporated general terrain features, climate, antenna characteristics, and wavelength into a general propagation model. The computerized model could be used to pre ...