Search Results

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

J. G. Ferranto, “Interference simulation for personal communications services testing, evaluation, and modeling,” Technical Report NTIA TR-97-338, July 1997

An interference model applicable to wireless technologies is presented in this report. Specifically, a generic methodology for cellular system self-interference modeling was developed, then applied to two proposed personal communications services (P...

Roger A. Dalke, George A. Hufford, and Ronald L. Ketchum, “A digital simulation model for local multipoint and multichannel multipoint distribution services,” Technical Report NTIA TR-97-340, July 1997

The Institute for Telecommunication Sciences has developed a computer simulation model that can be used to predict coverage and quality of service for proposed terrestrial communication systems that broadcast digital television such as local multipoi...

J. Randy Hoffman, John J. Lemmon, and Ronald L. Ketchum, “Field Strength Measurements of DGPS and FAA Beacons in the 285- to 325-kHz Band,” Technical Report NTIA TR-97-337, June 1997

Signal strength measurements in the 285- to 325-kHz band were conducted on eight U.S. Coast Guard differential global positioning system beacons along the Gulf and West Coast, and on a Federal Aviation Administration beacon in Bennett, Colorado. Dat...

Philip E. Gawthrop, “Assessment of Expansion of the Earth Exploration–Satellite Service in the 8025–8400 MHz Range,” Technical Memorandum NTIA TM-97-339, June 1997

This report assesses the expansion of the Earth Exploration-Satellite Service in the 8025–8400 MHz frequency range. The report identifies allocations, standards, regulations and current and planned spectrum usage applicable to this range for Governme...

Arthur D. Spaulding, “The Natural and Man-made Noise Environment in Personal Communications Services Bands,” Technical Report NTIA TR-96-330 (revised), May 1997

This report presents a summary of the available measurement information on the level and statistical characteristics of the background noise environment in the frequency range of 1–3 GHz. The frequency range covers the proposed frequencies for the n...

Frank H. Sanders, Bradley J. Ramsey, and Vincent S. Lawrence, “Broadband Spectrum Survey at Los Angeles, California,” Technical Report NTIA TR-97-336, May 1997

The National Telecommunications and Information Administration (NTIA) is responsible for managing the Federal Government’s use of the radio spectrum. In discharging this responsibility, NTIA funds the Institute for Telecommunication Sciences Radio Sp...

Robert O. DeBolt and Nicholas DeMinco, “FM Subcarrier Corridor Assessment for the Intelligent Transportation System,” Technical Report NTIA TR-97-335, January 1997

This report documents the assessment of FM subcarrier performance for Intelligent Transportation Systems (ITS) applications in three areas of interest in the United States. These areas are: 1) The Interstate 95 corridor from Richmond, Virginia, to Po...

“FY 1996 Technical Progress Report,” Technical Progress Report, January 1997

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...

Frank H. Sanders, Bradley J. Ramsey, and Vincent S. Lawrence, “Broadband Spectrum Survey at San Diego, California,” Technical Report NTIA TR-97-334, December 1996

The National Telecommunications and Information Administration (NTIA) is responsible for managing the Federal Government’s use of the radio spectrum. In discharging this responsibility, NTIA uses the Radio Spectrum Measurement System to collect data ...

Stephen Wolf et al., “Objective and Subjective Measures of MPEG Video Quality,” Technical Contribution, October 1996

Presents an in-depth analysis and discussion of the results from applying the ANSI T1.801.03-1996 objective video quality metrics to subjectively rated MPEG-1 and MPEG-2 video test scenes. The objective metrics presented in ANSI T1.801.03-1996 (Ameri...

Joseph P. Camacho and Richard J. Orsulak, “High frequency (3–30 MHz) spectrum planning options,” Technical Report NTIA TR-96-332, September 1996

This report examines the additional HF spectrum requirements for the maritime mobile, aeronautical mobile, mobile, amateur, and broadcasting services previously identified by NTIA. This spectrum availability study for the five radio services was prep...

John F. Mastrangelo and Wayne R. Rust, “Testing and evaluation of the subcarrier traffic information channel,” Technical Report NTIA TR-96-333, September 1996

In support of the Federal Highway Administration of the United States Department of Transportation, the Institute for Telecommunication Sciences has completed a laboratory and field test program designed to independently evaluate the performance of a...

Stephen D. Voran, “An Algorithm for Estimating the Delay of Telephony Speech,” Technical Contribution, September 1996

This contribution is provided for informational purposes. It contains a description of an algorithm that has successfully been used to estimate the delay of telephony band speech. The algorithm features a coarse stage that uses speech envelopes and ...

Roger A. Dalke, George A. Hufford, and Ronald L. Ketchum, “Radio Propagation Considerations for Local Multipoint Distribution Systems,” Technical Report NTIA TR-96-331, August 1996

A local multipoint distribution system will essentially broadcast television signals (and perhaps more) to subscribers in small cells. It has been proposed to put such systems in the frequency band from 27.5 to 29.5 GHz where the wave length is only ...

Stephen Wolf, “Measuring Digital Video Transmission Channel Gain, Level Offset, Active Video Shift, and Video Delay,” Technical Contribution, May 1996

Presents a computerized search method for determining the gain, level offset, active video shift, and video delay of a digital video transmission channel. The method uses digitized input and output NTSC video fields that have been time tagged with SM...

David J. Atkinson, “Exploring B-ISDN performance: Selected experiments and results,” Technical Report NTIA TR-96-329, April 1996

This report describes experiments conducted to explore the user-information transfer performance of the broadband integrated services digital network (B-ISDN), the emerging infrastructure for the global information age. These performance experiments ...

Jeffery A. Wepman and J. Randy Hoffman, “RF and IF digitization in radio receivers: Theory, concepts, and examples,” Technical Report NTIA TR-96-328, March 1996

Hardware development of analog-to-digital converters (ADC's) and digital signal processors, including specialized integrated circuits, has advanced rapidly within the last few years. These advances have paved the way for development of radio receiver...

Teresa G. Sparkman, David R. Wortendyke, Christopher Riddle, and Gregory P. Smith, “Testing automatic link establishment high frequency radios using compact disk technology. Part I: Clean tones,” Technical Report NTIA TR-96-327, February 1996

A method of high frequency (HF) radio interoperability testing in accordance with Federal Standards 1045A and 1046/1 is now available on a compact disc (CD) created by engineers at the National Telecommunications and Information Administration, Insti...

“FY 1995 Technical Progress Report,” Technical Progress Report, January 1996

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...

Stephen Wolf, “Tape Duplication and Traceability Process for ANSI T1.801.02-1996 (Terms and Definitions),” Technical Contribution, December 1995

Recommends a process to be used by ANSI for duplication and traceability of video tapes for ANSI T1.801.02-1996 (American National Standard for Telecommunications - Digital Transport of Video Teleconferencing/Video Telephony Signals - Performance Ter...