Spectrum Planning at the FCC and Emerging Technology Topics
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Spectrum Management: a State of the Profession White Paper
Astro2020 APC White Paper Spectrum Management: A State of the Profession White Paper Type of Activity: ☐ Ground Based Project ☐ Space Based Project ☐ Infrastructure Activity ☐ Technological Development Activity ☒ State of the Profession Consideration ☐ Other Principal Author: Name: Liese van Zee Institution: Indiana University Email: [email protected] Phone: 812 855 0274 Co-authors: (names and institutions) David DeBoer (University of California, Radio Astronomy Lab), Darrel Emerson (Steward Observatory, University of Arizona), Tomas E. Gergely (retired), Namir Kassim (Naval Research Laboratory), Amy J. Lovell (Agnes Scott College), James M. Moran (Center for Astrophysics | Harvard & Smithsonian), Timothy J. Pearson (California Institute of Technology), Scott Ransom (National Radio Astronomy Observatory), and Gregory B. Taylor (University of New Mexico) Abstract (optional): This Astro2020 APC white paper addresses state of the profession considerations regarding spectrum management for the protection of radio astronomy observations. Given the increasing commercial demand for radio spectrum, and the high monetary value associated with such use, innovative approaches to spectrum management will be necessary to ensure the scientific capabilities of current and future radio telescopes. Key aspects include development of methods, in both hardware and software, to improve mitigation and excision of radio frequency interference (RFI). In addition, innovative approaches to radio regulations and coordination between observatories and commercial -
IC-A210 Instruction Manual
IC-A210.qxd 2007.07.24 2:06 PM Page a INSTRUCTION MANUAL VHF AIR BAND TRANSCEIVER iA210 This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. IC-A210.qxd 2007.07.24 2:06 PM Page b IMPORTANT FEATURES READ ALL INSTRUCTIONS carefully and completely ❍ Large, bright OLED display before using the transceiver. A fixed mount VHF airband first! The IC-A210 has an organic light emitting diode (OLED) display. All man-made lighting emits its own SAVE THIS INSTRUCTION MANUAL — This in- light and display offers many advantages in brightness, not bright- ness, vividness, high contrast, wide viewing angle and response time struction manual contains important operating instructions for compared to a conventional display. In addition, the auto dimmer the IC-A210. function adjusts the display for optimum brightness at day or night. ❍ Easy channel selection It’s fast and easy to select any of memory channels in the IC-A210. EXPLICIT DEFINITIONS The “flip-flop” arrow button switches between active and standby channels. The dualwatch function allows you to monitor two channels The explicit definitions below apply to this instruction manual. simultaneously. In addition, the history memory channel stores the last 10 channels used and allows you to recall those channels easily. WORD DEFINITION ❍ GPS memory function Personal injury, Þre hazard or electric shock When connected to an external GPS receiver* equipped with an air- RWARNING may occur. port frequency database, the IC-A210 will instantly tune in the local CAUTION Equipment damage may occur. -
NTFA & Channel Arrangements
NTFA & Channel arrangements Training on SMS4DC Vientiane, Lao P.D.R 12 – 14 February 2019 Aamir Riaz International Telecommunication Union – Regional Office for Asia and the Pacific [email protected] Outline • National Table of Frequency Allocations 1 • Channel Arrangements 2 SMS4DC Spectrum Allocation Chart Draw Chart: Item to depict a section of regional or national FAT in strip format. Each segment in the frequency allocations strip denotes a frequency allocation to a radiocommunication service with its service priority . SMS4DC Spectrum Allocation Chart(2) The mouse cursor shape on the strip is changed to a cross (+) and a left-click on a colored patch shows its characteristics, including: frequency band, service name, service priority, service footnotes and frequency band footnotes at the top-left corner of chart. Push buttons in browsing toolbar in the item “Frequency Allocations‐>Edit‐ >Plan” Modification of legend of frequency allocations chart Service table” item in menu enables user to browse and modify radiocommunication service name and color used in the frequency allocations chart. Editing National Plan and Footnote The “Edit” menu under the frequency allocations chart provides three powerful items: “Plan”, “Service Table” and “Footnotes” to edit the content of the frequency allocations table and chart color. Editing National Plan and Footnote(1) Editing the Service Table Editing the footnote Outline • National Table of Frequency Allocations 1 • Channel Arrangements 2 Channel Arrangements Purposes(1) Once a frequency band has been allocated to a service, it is necessary to make provision for systems and users to access the frequencies in an orderly manner. The most commonly used method is by frequency division. -
Wireless Backhaul Evolution Delivering Next-Generation Connectivity
Wireless Backhaul Evolution Delivering next-generation connectivity February 2021 Copyright © 2021 GSMA The GSMA represents the interests of mobile operators ABI Research provides strategic guidance to visionaries, worldwide, uniting more than 750 operators and nearly delivering actionable intelligence on the transformative 400 companies in the broader mobile ecosystem, including technologies that are dramatically reshaping industries, handset and device makers, software companies, equipment economies, and workforces across the world. ABI Research’s providers and internet companies, as well as organisations global team of analysts publish groundbreaking studies often in adjacent industry sectors. The GSMA also produces the years ahead of other technology advisory firms, empowering our industry-leading MWC events held annually in Barcelona, Los clients to stay ahead of their markets and their competitors. Angeles and Shanghai, as well as the Mobile 360 Series of For more information about ABI Research’s services, regional conferences. contact us at +1.516.624.2500 in the Americas, For more information, please visit the GSMA corporate +44.203.326.0140 in Europe, +65.6592.0290 in Asia-Pacific or website at www.gsma.com. visit www.abiresearch.com. Follow the GSMA on Twitter: @GSMA. Published February 2021 WIRELESS BACKHAUL EVOLUTION TABLE OF CONTENTS 1. EXECUTIVE SUMMARY ................................................................................................................................................................................5 -
Models and Solution Techniques for Frequency Assignment Problems
Ann Oper Res (2007) 153: 79–129 DOI 10.1007/s10479-007-0178-0 Models and solution techniques for frequency assignment problems Karen I. Aardal · Stan P.M. van Hoesel · Arie M.C.A. Koster · Carlo Mannino · Antonio Sassano Published online: 12 May 2007 © Springer Science+Business Media, LLC 2007 Abstract Wireless communication is used in many different situations such as mobile tele- phony, radio and TV broadcasting, satellite communication, wireless LANs, and military operations. In each of these situations a frequency assignment problem arises with applica- tion specific characteristics. Researchers have developed different modeling ideas for each of the features of the problem, such as the handling of interference among radio signals, the availability of frequencies, and the optimization criterion. This survey gives an overview of the models and methods that the literature provides on the topic. We present a broad description of the practical settings in which frequency assign- ment is applied. We also present a classification of the different models and formulations described in the literature, such that the common features of the models are emphasized. The solution methods are divided in two parts. Optimization and lower bounding techniques on the one hand, and heuristic search techniques on the other hand. The literature is classi- fied according to the used methods. Again, we emphasize the common features, used in the different papers. The quality of the solution methods is compared, whenever possible, on publicly available benchmark instances. This is an updated version of a paper that appeared in 4OR 1, 261–317, 2003. K.I. Aardal Centrum voor Wiskunde en Informatica (CWI), P.O. -
ATTACHMENT a to FCC Public Notice DA 20-1243 Recommendations Presented at October 20, 2020, Meeting of the World Radiocommunicat
ATTACHMENT A to FCC Public Notice DA 20-1243 Recommendations presented at October 20, 2020, Meeting of the World Radiocommunication Conference Advisory Committee 1 Maritime Aeronautical and Radar Services 2 WAC-23/0009 IWG-1/007 (09.23.20) UNITED STATES OF AMERICA DRAFT PRELIMINARY VIEW ON WRC-23 AI 1.6 AGENDA ITEM 1.6: to consider, in accordance with Resolution 772 (WRC-19), regulatory provisions to facilitate radiocommunications for sub-orbital vehicles; ISSUE: The United States requires a stable regulatory framework for radiocommunications for sub-orbital vehicles. BACKGROUND: Sub-orbital vehicles must operate in the same airspace as conventional aircraft while transitioning to and from space. Stations on board sub-orbital vehicles have a need for voice/data communications, navigation, surveillance, and telemetry and tracking and command (TT&C) applications to safely and effectively complete various mission requirements. The current regulatory provisions and procedures for terrestrial and space services may or may not be adequate for international use of relevant frequency assignments by stations on board sub-orbital vehicles. Resolution 772 (WRC-19) calls for studying spectrum needs and appropriate modifications to the Radio Regulations to accommodate sub-orbital vehicle radiocommunications requirements, excluding any new allocations or changes to the existing allocations in Article 51. There are several U.S. Commercial Space Transportation industry and government initiatives that could benefit from modification of the Radio Regulations as a result of these technical, operational, and regulatory studies. U.S. VIEW: To pursue studies called for by Resolution 772 (WRC-19) as a basis for possible new Radio Regulations to support the growing radiocommunications needs of sub-orbital vehicles. -
Evaluation of a Channel Assignment Scheme in Mobile Network Systems
Nurelmadina et al. Hum. Cent. Comput. Inf. Sci. (2016) 6:21 DOI 10.1186/s13673-016-0075-0 RESEARCH Open Access Evaluation of a channel assignment scheme in mobile network systems Nahla Nurelmadina1, Ibtehal Nafea1 and Muhammad Younas2* *Correspondence: [email protected] Abstract 2 Department of Computing The channel assignment problem is a complex problem which requires that under cer- and Communication Technologies, Oxford Brookes tain constraints a minimum number of channels have to be assigned to mobile calls in University, Oxford OX33 the wireless mobile system. In this paper, we propose a new scheme, which is based on 1HX, UK double band frequency and channel borrowing strategy. The proposed scheme takes Full list of author information is available at the end of the into account factors such as limited bandwidth of wireless networks and the capacity article of underlying servers involved in processing mobile calls. It aims to ensure end-to-end performance by considering the characteristics of mobile devices. This is achieved by determining the position of users (or mobile stations) in wireless mobile systems. The proposed scheme is simulated in order to investigate its efficiency within a specific area of a large city in Saudi Arabia. Experimental results demonstrate that the proposed scheme significantly improves the performance of mobile calls as well as reduces the blocking when the number of mobile call increases. Keywords: Mobile network systems, Channel borrowing, Bandwidth, Dynamic channel assignment Background Mobile devices and particularly mobile phones have been used for a variety of purposes rang- ing from voice calls through to sending SMS/emails to online banking and shopping. -
Icom Black Box Receiver
AOR Presents Two New Wide Coverage Professional Grade Communications Receivers AR2300 “Black Box” receiver It’s a new generation of software controlled black box receivers! Available in professional and consumer versions, the AR2300 covers 40 KHz to 3.15 GHz* and monitors up to three channels simultaneously. Fast Fourier Transform algorithms provide a very fast and high level of signal processing, allowing the receiver to scan through large frequency segments quickly and accurately. All functions can be controlled through a PC running Windows XP or higher. Advanced signal detection capabilities can find hidden transmitters. An optional external IP control unit enables the AR2300 to be fully controlled from a remote location and send received signals to the control point via the internet. It can also be used for unattended long-term monitoring by an internal SD audio recorder or spectrum recording with optional AR-IQ software for laboratory signal analysis. AR5001D performs with accuracy, sensitivity and speed Developed to meet the monitoring needs of security professionals and government agencies, the AR5001D features ultra-wide frequency coverage from 40 KHz to 3.15 GHz*, in 1Hz steps with 1ppm accuracy and no interruptions. Up to three channels can be monitored simultaneously. Fast Fourier Transform algorithms provide a very fast and high level of digital signal processing, allowing the receiver to scan through large frequency segments quickly and accurately. Controlled through a PC running Windows XP or higher, it is available in both professional and consumer versions. With its popular analog signal meter and large easy-to-read digital spectrum display, the AR5001D is destined to extend the legend of the AR5000A+3. -
Nps Frequency Management Guidance for Radio Communications, Electronics, and Wireless Systems
DIRECTOR’S ORDER #15: NPS FREQUENCY MANAGEMENT GUIDANCE FOR RADIO COMMUNICATIONS, ELECTRONICS, AND WIRELESS SYSTEMS Duration: This order will remain in effect until amended or rescinded This Director’s Order, along with its Reference Handbook 15 (RH-15), replaces Director’s Order #15: NPS Wireless Spectrum, dated November 8, 1999; and complies with Director’s Order #11A: Information and Technology Management policy. Contents: 1. Purpose 2. Authority 3. Background 4. Instructions and Requirements 4.1 General 4.2 Delegation of Authority 4.3 Areas of Responsibility 4.4 Frequency Request Applications 4.5 Frequency Assignment Issuance 4.6 Frequency Assignment Review 4.7 Frequency Assignment Security 4.8 Records Management 4.9 Additional References/Information _____________________________________________________________________________________________ 1. Purpose The purpose of this Director’s Order is to set forth the instructions, guidance, and requirements for National Park Service managers to obtain and maintain effective radio frequency dependent telecommunications and information systems that are required to comply with all relevant standards and authorities. This Order also designates the Associate Director for Information Resources as the National Park Service authority for the approval process for telecommunications facilities proposed by commercial service providers (i.e., cellular, Wi-Fi, broadband) to be sited on National Park Service administered lands. 2. Authority Authority to issue this Order is contained in 54 USC 100101(a) et seq. (commonly known as the National Park System Organic Act), and Part 245 of the Department of the Interior Manual. In addition, the National Park Service (NPS) must comply with 47 USC 305, which provides that Government stations "shall use such frequencies as shall be assigned to each or to each class by the President . -
Icom AV Retail Product & Price Catalog
U.S. Avionics Retail Product & Price Catalog October 2017 All stated specifications are subject to change without notice or obligation. All Icom radios meet or exceed FCC regulations limiting spurious emissions. © 2017 Icom America Inc. The Icom logo is a registered trademark of Icom Inc. The IDAS™ name and logo are trademarks of Icom Inc. All other trademarks remain the property of their respective owners. Contents Handhelds ............................................................................................................................................. 4 A14 .................................................................................................................................................... 5 A24 / A6 ............................................................................................................................................. 8 A25 .................................................................................................................................................. 11 Mobiles / Panel Mounts ........................................................................................................................ 13 A120 ................................................................................................................................................ 14 A220 ................................................................................................................................................ 17 Fixed Comms Infrastructure ................................................................................................................ -
Three Results on Frequency Assignment in Linear Cellular Networks
Three Results on Frequency Assignment in Linear Cellular Networks Marek Chrobak∗ Jiˇr´ıSgall† Abstract In the frequency assignment problem we are given a graph representing a wireless network and a sequence of requests, where each request is associated with a vertex. Each request has two more attributes: its arrival and departure times, and it is considered active from the time of arrival to the time of departure. We want to assign frequencies to all requests so that at each time step any two active requests associated with the same or adjacent nodes use different frequencies. The objective is to minimize the number of frequencies used. We focus exclusively on the special case of the problem when the underlying graph is a linear network (path). For this case, we consider both the offline and online versions of the problem, and we present three results. First, in the incremental online case, where the requests arrive over time, but never depart, we give an algorithm with an optimal (asymptotic) competitive 4 ratio 3 . Second, in the general online case, where the requests arrive and depart over time, we 11 improve the current lower bound on the (asymptotic) competitive ratio to 7 . Third, we prove that the offline version of this problem is NP-complete. 1 Introduction The frequency assignment problem. In a wireless network, the coverage area is divided into cells, with each cell covered by a transmitter. Each user within a given cell is assigned a unique frequency for communicating with the transmitter. In order to avoid interferences, it is also necessary to ensure that any pair of adjoining cells uses different sets of frequencies. -
Two Way Radio Proposal
City of Charlotte City of Charlotte Bid Number: 269-2019-054 Radios and Communication Equipment TWO WAY RADIO OF CAROLINA, INC. A Legend in Communications since 1956 FOR INFORMATION CONTACT: RJ Ochoa Jonathan Sable Regional Manger Phone: (704) 372-3444 Fax: (704) 372-7059 Email: [email protected] [email protected] “A LEGEND IN COMMUNICATIONS SINCE 1956.” $SULO %LG1XPEHU &KDUORWWH0HFNOHQEXUJ*RYHUQPHQW&HQWHU 3URFXUHPHQW6HUYLFHV'LYLVLRQWK )ORRU (DVW)RXUWK6WUHHWWK )ORRU± &0*& &KDUORWWH1& $WWQ'DYLG7DWH &RYHU/HWWHU 'HDU&LW\RI&KDUORWWH 7KDQN\RXIRUWKHLQYLWDWLRQWRSODFHDELGIRUWKH&LW\RI&KDUORWWH¶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¶VPRVWUHFRJQL]DEOHQDPHVLQFOXGLQJ%DQNRI$PHULFD:HOOV )DUJR%DQN&KDUORWWH+RUQHWV1$6&$5+DOORI)DPH&KDUORWWH&RQYHQWLRQ&HQWHUDQGWKH %OXPHQWKDO3HUIRUPLQJ$UWV&HQWHU 7ZR:D\5DGLRRI&DUROLQDUHDOL]HVWKHLPSRUWDQFHRIVXSHULRUFRPPXQLFDWLRQVLQWRGD\ V3XEOLF VDIHW\HQYLURQPHQWV:HUHSUHVHQWWKHEHVW3XEOLF6DIHW\UDGLRPDQXIDFWXUHUV 0RWRUROD,&20 DQG()-RKQVRQ ZKLFKJLYHVXVDXQLTXHSHUVSHFWLYHWRXQGHUVWDQGDOOWKHWHFKQRORJ\RSWLRQV DYDLODEOHWRWKH&LW\RI&KDUORWWH7KLVJLYHVXVWKHH[FOXVLYHDELOLW\WRGHOLYHUWKHEHVWRYHUDOO