Publications
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ASR Analytics Reports and Case Studies
In 2010, after a competitive procurement, NTIA awarded a contract to research firm ASR Analytics, LLC to conduct an independent analysis of the social and economic impacts of the $4 billion in Recovery Act grants awarded under the Broadband Technology Opportunities Program (BTOP). ASR performed an extensive analysis of the quarterly and annual reports from more than 200 grantees over a four-year period, and conducted 27 detailed case studies of individual BTOP projects. The case studies were based on site visits that included interviews, observations and data collection. T
NTIA’s Role in Root Zone Management
Below is a slide presentation outlining NTIA’s role in the management of the Internet’s root zone file, which includes the authoritative listing of information related to all top-level domains (TLDs), and the root WHOIS database, a separate database that contains contact information associated with each TLD and other registry information.
Coordination Distances for Low Observable Diagnostic Measurement Systems
Revision to the Manual of Regulations and Procedures for Federal Radio Frequency Management (May 2014)
Federal Government Spectrum Use Reports 225 MHz to 5 GHz as of 11/14/2014
Each band report presents publicly available information pertaining to the various federal uses, including a narrative description and quantitative overview and graphical depictions of agency assignments. Each report includes the following five sections:
10/09/2014 CSMAC Meeting Transcript
Radio Channel Impulse Response Measurement and Analysis
Abstract: This paper describes radio channel sounding measurements and analysis using pseudo-noise (PN) codes. It presents a channel sounding model and shows how channel measurements can be made. A measurement system is described that can be implemented using a combination of radio frequency (RF) hardware, high speed analog to digital converters (ADC), and signal processing software. Sampling requirements and models for describing the stochastic nature of the radio channel are discussed.
Wideband Man-Made Radio Noise Measurements in the VHF and Low UHF Bands
Abstract: Man-made radio noise measurements were conducted in a 1.16-MHz bandwidth at 112.5, 221.5, and 401 MHz at two residential and two business locations in the Boulder/Denver, Colorado, area. The measurement frequencies and bandwidth were selected using the results of a spectrum survey performed over the 104– 1060-MHz frequency range. The noise measurement data were collected as a complex baseband noise data record (consisting of six million in-phase (I) and quadrature-phase (Q) samples) every 10 minutes over a 24-hour period for each frequency and location.
In-Building Radio Enhancement Systems for Public Safety
Abstract: Reliable public safety communications between system repeaters outside a building and portable radios inside a building is often not possible due to building attenuation. To circumvent this problem, increasing numbers of municipalities are requiring building owners to provide in-building radio enhancement systems (IBRESs) for public safety communications. This report is intended to be used by public safety communications professionals who are tasked with assisting building owners to fulfill this requirement.
Improved Estimation of the Third-Order Harmonic Emissions of Land Mobile Radio Base Stations
Abstract: NTIA/ITS has developed an improved electromagnetic compatibility (EMC) analysis method that can be applied to more accurately model real scenarios for evaluating interference. The methodology described in this report can be used to conduct EMC analyses for base stations that use a variety of antennas. The model can be used to determine the received power in the proximity of the base station at both the fundamental and harmonic frequencies. It uses accurate radio-wave propagation models and antenna models.