Search Results

The search returned 1,237 publication(s) on its.ntia.gov.

National Telecommunications and Information Administration, “Falling Through the Net: A Survey of the “Have Nots” in Rural and Urban America,” Special Publication Unnumbered, July 1995

This is the first of two profiles of telephone and computer penetration released by the National Telecommunications and Information Administration (NTIA). The report surveys trends in telephone subscribership, as well as ownership and usage of perso...

Emilio Gonzalez, “Connecting the Nation: Libraries, and Health Care Organizations in the Information Age,” Special Publication, June 1995

Connecting every classroom, library, hospital, and clinic in the United States to the National Information Infrastructure (NII) is a priority. It is critical for these public institutions to become and remain active participants in the NII, since the...

Eric E. Johnson, Christopher Redding, David F. Peach, and Robert T. Adair, “Implementation Guide for Federal Standard 1049 Section 1, Linking Protection,” Technical Memorandum NTIA TM-95-166, June 1995

Automatic Link Establishment (ALE) technology automates the selection of channels and establishment of links among high-frequency radios, but creates a vulnerability in such automated networks to hostile manipulation of network operations. The Linkin...

David F. Peach, “Dependence on foreign sources as it impacts the U.S. telecommunications infrastructure,” Technical Report NTIA TR-95-318, May 1995

The ability to rapidly mobilize the telecommunications industry is of concern in National Security and Emergency Preparedness planning scenarios. This report assesses the extent to which the U.S. telecommunications industry is dependent on foreign so...

Gerald F. Hurt et al., “Spectrum Reallocation Final Report: Response to Title VI - Omnibus Budget Reconciliation Act of 1993,” Special Publication NTIA SP-95-32, February 1995

This report identifies radio spectrum currently used by the Federal Government for reallocation to the private sector. It provides an overview of the reallocated bands, indicating the Federal usage, transition timetable, and any needed sharing requi...

Stephen Wolf, “An Analysis Technique for Detecting Temporal Edge Noise,” Technical Contribution, January 1995

Presents an objective analysis technique that can be used for detecting temporal edge noise in an output video sequence that has been digitally compressed. Temporal edge noise is defined in ANSI T1.801.02-1996 as "A form of edge busyness characterize...

Dwight Melcher and Stephen Wolf, “Objective Measures for Detecting Digital Tiling,” Technical Contribution, January 1995

Describes an algorithm for (1) quantifying the spatial gradients or edges in an image as a function of angle or orientation, (2) extracting low bandwidth features from these input and corresponding output spatial gradient images, and (3) deriving obj...

Stephen Wolf, “An In-depth Analysis of the P6 Lost Motion Energy Parameter,” Technical Contribution, January 1995

Provides an in-depth analysis of the behavior of the P6 video performance parameter, a parameter that measures the motion energy that is lost when a video scene is transmitted through a digital video compression system. Objective to subjective correl...

Stephen Wolf, “Assessing the Composite Performance of a Hypothetical Reference Circuit (HRC) for an Ensemble of Source Material,” Technical Contribution, January 1995

This contribution discusses the advantages and disadvantages of two methods for obtaining a composite rating of Hypothetical Reference Circuit (HRC) performance for an ensemble of source material. The term HRC refers to a specific realization of a vi...

“FY 1994 Technical Progress Report,” Technical Progress Report, January 1995

The Institute for Telecommunication Sciences (ITS) is the research and engineering laboratory of the National Telecommunications and Information Administration (NTIA) of the U.S. Department of Commerce (DOC). ITS provides technical support to NTIA in...

Arthur A. Webster, “Two Criteria for Video Test Scene Selection,” Technical Contribution, December 1994

Describes two objective measurements that can be used to quantify the spatial and temporal information content of a video test scene. Test scene coding difficulty (and hence video quality) often depend on the spatial and temporal information complexi...

NTIA Special Study Staff et al., “A Technical Report to the Secretary of Transportation on a National Approach to Augmented GPS Services,” Special Publication NTIA SP-94-30, December 1994

This report documents the development of recommendations for a national approach to augmented Global Positioning System (GPS) services. The Institute for Telecommunication Sciences led a study team that included the U. S. Army Topographic Engineerin...

Herbert K. Kobayashi and Ernesto A. Cerezo, “Federal Government spectrum usage in the 138–150.8 MHz band,” Technical Memorandum NTIA TM-95-165, November 1994

Janet Geikas and Nicholas DeMinco, “Jammer effectiveness model,” Technical Report NTIA TR-95-317, November 1994

The Jammer Effectiveness Model (JEM) is a Windows-based computer program which provides an integrated procedure for modeling propagation effects on telecommunication links and the effect of a jammer on communication links and networks. JEM provides t...

Stephen D. Voran, “Techniques for Comparing Objective and Subjective Speech Quality Tests,” Conference Paper, November 1994

Objective (or instrumental) tests of speech quality have been proposed as ways to reduce the need for expensive and time-consuming subjective (or auditory) tests. Both types of tests attempt to quantify the range of opinions that listeners express in...

Coleen T. Jones, Ned Crow, Stephen Wolf, and Arthur A. Webster, “Analysis of T1A1.5 Subjective and Objective Test Data,” Technical Contribution, October 1994

Presents detailed intra-laboratory (within laboratory) and inter-laboratory (between laboratories) analysis of variance (ANOVA) results for the T1A1 subjective video experiment that contained 625 mean opinion scores (25 test scenes passed through 25 ...

Robert J. Mayher, L. C. Brown, K. A. Kensinger, and Carl A. Winkler, “Evaluation of Spectrum Management in Romania,” Technical Memorandum NTIA TM-94-164, October 1994

Eric E. Johnson, David F. Peach, and Robert T. Adair, “High Frequency Radio Channel and Modem Simulator,” Technical Memorandum NTIA TM-94-163, August 1994

Automatic Link Establishment (ALE) technology automates the selection of channels and establishment of links among high-frequency (HF) radios. This report describes software that simulates fading channels and the Federal Standard ALE modem used over ...

Peter B. Papazian, Michael P. Roadifer, and George A. Hufford, “Initial Study of the Local Multipoint Distribution System Radio Channel,” Technical Report NTIA TR-94-315, August 1994

A broadband millimeter wave study was completed to characterize the radio channel for Local Multipoint Distribution Systems in Boulder, Colorado. The study determined characteristics for proposed 20-MHz channels centered at 30.3 GHz using two transm...

George A. Hufford, “Orthogonal frequency division multiplexing: An application to high definition television,” Technical Report NTIA TR-94-316, August 1994

"Orthogonal Frequency Division Multiplexing" is an interesting system architecture for high data-rate digital transmission that has been receiving renewed attention. This report is a discussion of how it works and of how it might be used to carry Hig...