Roadmap for C-Band Spectrum in ASEAN

Total Page:16

File Type:pdf, Size:1020Kb

Roadmap for C-Band Spectrum in ASEAN Roadmap for C-band spectrum in ASEAN August 2019 Copyright © 2019 GSM Association The GSMA represents the interests of mobile operators About Plum worldwide, uniting more than 750 operators with over 350 Plum is an independent consulting firm, focused on the companies in the broader mobile ecosystem, including telecommunications, media, technology, and adjacent handset and device makers, software companies, equipment sectors. We apply extensive industry knowledge, consulting providers and internet companies, as well as organisations experience, and rigorous analysis to address challenges and in adjacent industry sectors. The GSMA also produces the opportunities across regulatory, radio spectrum, economic, industry-leading MWC events held annually in Barcelona, commercial, and technology domains. Los Angeles and Shanghai, as well as the Mobile 360 Series of regional conferences. For more information, please visit the GSMA corporate website at www.gsma.com and spectrum website at www.gsma.com/spectrum To view the GSMA’s related resources online, visit www.gsma.com/spectrum About WPC Follow the GSMA on Twitter: @GSMA and Windsor Place Consulting is internationally recognised @GSMAPolicy as an outstanding provider of advice to the information industries especially in Asia. The firm works extensively in telecommunications, media, and IT, both in the development of commercial strategies for the private sector and the formulation of national policy and legislative settings for public sector clients. About this study This is a study for GSMA to assess the current use of the C-band (3.3-4.2 GHz) in the ASEAN region and to identify the roadmap and strategy to make available spectrum to support the deployment of 5G services while ensuring coexistence with other users in the band. CONTENTS EXECUTIVE SUMMARY 3 Why 3.5 GHz? 3 Current uses in the C-band 3 Options to release 3.5 GHz spectrum 5 The ASEAN roadmap for 3.5 GHz 6 1. THE IMPORTANCE OF 3.5 GHz FOR 5G 8 1.1 Progress in ASEAN so far 10 2. CURRENT USES IN THE C-BAND 12 2.1 Frequency allocations in the 3.3 – 4.2 GHz band 12 2.2 Services in the 3.3 – 4.2 GHz band 13 2.3 Licensing approaches by service and implications for refarming 14 2.4 Current status in ASEAN 15 3. OPTIONS TO RELEASE SPECTRUM 17 3.1 How will 3.5 GHz spectrum be used for 5G? 17 3.2 Is sharing feasible with incumbent services using mitigation? 18 3.3 What measures are feasible? 19 3.4 Clearance of incumbents 21 3.5 Cross border considerations 22 4. THE ASEAN ROADMAP FOR 3.5 GHz 23 4.1 Current plans for 3.5 GHz band 23 4.2 Recommendations for release of 3.5 GHz 28 4.3 Implications on spectrum award 31 4.4 Conclusion 33 APPENDIX A ASEAN MEMBER STATES 35 A.1 Brunei Darussalam 35 A.2 Kingdom of Cambodia 36 A.3 Republic of Indonesia 37 A.4 Lao PDR 37 A.5 Malaysia 38 A.6 Republic of the Union of Myanmar 38 A.7 Republic of the Philippines 39 A.8 Republic of Singapore 40 A.9 Kingdom of Thailand 41 A.10 Socialist Republic of Vietnam 42 APPENDIX B INTERNATIONAL CASE STUDIES 45 B.1 Australia 50 B.2 Brazil 48 B.3 Hong Kong 50 B.4 UK 53 B.5 Europe 56 B.6 US 56 B.7 Taiwan 57 APPENDIX C SHARING STUDIES 61 C.1 ITU 61 C.2 CEPT / ECC 66 C.3 Qualcomm submission to APT 68 APPENDIX D SYNCHRONISATION BETWEEN MOBILE NETWORKS 71 D.1 Frame Structure 73 APPENDIX E ASEAN C-BAND NATIONAL SATELLITE USE 74 APPENDIX F GLOSSARY 76 1 ROADMAP FOR C-BAND SPECTRUM IN ASEAN 2 ROADMAP FOR C-BAND SPECTRUM IN ASEAN Executive summary Why 3.5 GHz? The 3.5 GHz band (3.3 – 3.8 GHz) is a core spectrum In ASEAN, the 3.5 GHz band is used by different band for 5G deployment. Over the last 24 months, satellite and fixed services and its availability is less many national regulators globally have either clear. Aside from the Philippines which has already assigned this spectrum for mobile or have started assigned parts of the band for IMT, other countries preparations to do so. There is also a rapidly in the region are looking into the release of 3.5 GHz growing ecosystem of devices, setting the stage to support 5G rollouts, with other frequency bands for successful rollouts. also being considered. To deliver on the promise of 5G and take advantage of its many benefits, it is Due to its propagation characteristics and the important for the region’s regulators to develop a potential for large contiguous bandwidths, the 3.5 roadmap for the release of as much as possible of the GHz band is an ideal frequency band for 5G as it is 3.5 GHz band. At the same time, the specific needs able to provide both capacity (the amount of data of current users in the band should be taken into traffic it can support) and coverage (the distance the consideration. radio signals travel). High-speed enhanced mobile broadband services need to be capable of delivering This report discusses the current use of the C-band peak download speeds of at least 20 Gbps, a reliable in ASEAN, the different options to release the band 100 Mbps user experience data rate in urban areas, for mobile use, and the factors that need to be and 4 ms latency. The 3.5 GHz band will be key for taken into account in deciding on the appropriate delivering eMBB and to enable good 5G service way forward. Recommendations for developing the performance, 80 – 100 MHz of 3.5 GHz spectrum per roadmap to release the 3.5 GHz band in ASEAN are mobile network operator is preferred. then provided. Current uses in the C-band The current use of the C-band (3.3 – 4.2 GHz) band • VSATs, which are small two-way satellite systems, varies across the ASEAN region and by country. primarily used by businesses, but also for military The main use is for fixed satellite service (space-to- and government applications. Earth), although there is also use in parts of the band for radiolocation and fixed service (mainly point to • Satellite Master Antenna Television (SMATV), a multipoint or wireless broadband services). Figure 1 system that uses multiple satellite and broadcast provides a summary of the current status. signals to create a single integrated cable signal for distribution to a cabling network within a building The fixed satellite service (FSS) applications in the (e.g. apartment block, hospital etc.). 3.4 GHz – 4.2 GHz range include: • TV receive-only (TVRO), used for reception of • Large satellite earth stations which serve as a broadcast signals such as free-to-air television. gateway that carry trunk or network traffic (feeder links) to and from satellite space stations • Telemetry, tracking, and command (TT&C) stations used for communication between spacecraft and the ground. 3 ROADMAP FOR C-BAND SPECTRUM IN ASEAN Figure 1 Current status of 3.3 – 4.2 GHz in ASEAN countries (as of July 2019) aav 3400 MHz MHz 3500 3600 MHz MHz 3700 3800 MHz MHz 3900 4000 MHz MHz 4100 4200 MHz Myanmar Lao PDR Vietnam Cambodia Thailand Malaysia Singapore Indonesia Brunei Darussalem Philippines Fixed Satellite Service Fixed Service Radar & radiolocation Wireless Broadband Mobile/IMT Not yet assigned Source: Plum-WPC analysis based on information from national regulators. 4 ROADMAP FOR C-BAND SPECTRUM IN ASEAN Options to release 3.5 GHz spectrum There are two general approaches to release the The potential to share between IMT and incumbent spectrum for mobile use, namely users depends on the services themselves, the extent of their deployment and the type of sharing 1. Accommodate both mobile and existing users envisioned (co- or adjacent-channel) as shown in through sharing. Figure 2. 2. Clear the band (or parts of it) by migrating existing users to alternative bands or technologies. Figure 2 Coexistence potential between IMT and incumbent services in 3300 – 4200 MHz band Incumbent service Co-channel Adjacent channel FSS (Limited FSS earth station Yes, with detailed coordination / Yes, with detailed coordination / deployment) mitigation measures mitigation measures FSS (Ubiquitous FSS deployment, e.g. No Yes, with suitable guard band TVROs and VSATs) FS (Limited FS deployment of point to Yes, with detailed coordination / Yes, with detailed coordination / point links) mitigation measures mitigation measures FS (Ubiquitous FS deployment of point No Yes, with suitable guard band to point links) Yes, with mitigation measures e.g. FS (FS point to multipoint / BWA) Yes synchronisation Radiolocation / Radars Possibly, with detailed coordination Probably, with detailed coordination There is no one ‘correct’ way to address potential • IMT base station location limits interference issues. Instead, the solution is likely to be dependent on local conditions around the extent • Reduced base station transmitter power and nature of FSS usage in each country. A number of studies have been undertaken with different • Detailed coordination conclusions on the necessary guard band between the services, ranging from 20 MHz up to 100 MHz. A cost-benefit analysis should be undertaken to assess the optimum approach for the release of 3.5 GHz In addition to guard bands, other possible measures for 5G. It should include the cost of implementing to ensure coexistence between IMT and FSS coexistence measures or a band clearance. In some include; cases, a hybrid of the two approaches may be appropriate. For example, in its plans for releasing the • Earth station site shielding 3575-3700 MHz band, the Australian regulator ACMA decided to clear existing FSS and FS users in metro and • Restriction zones to protect FSS regional areas over a transition period of up to seven years while specifying coexistence measures to protect • Improved FSS receivers incumbent users during this period.
Recommended publications
  • Satellite Regulatory and Usage in Indonesia
    Ministry of Communication and Information Technology Toward The Indonesian Information Society Satellite Regulatory and Usage in Indonesia ITU/MIC International Satellite Symposium 2015 30 September- 1 October 2015 Danang City, Vietnam Directorate General of Resource Management and Equipment Standard of Post and Information Technology Background The largest archipelago country : 13,466 islands (already have coordinates and registered) source: Geospasial Information Indonesia (BIG) May 2014 total land area: 1,919,440 km2 (land: 1,826,440 km2, inland water: 93,000 km2) source: statistics Indonesia (BPS) May 2014 The Role of Satellite In Indonesia (1/2) BACKBONE NETWORK IN INDONESIA No access and terestrial backbone ACCESS NETWORK (CELLULAR) IN INDONESIA Still needed The Role of Satellite In Indonesia (2/2) Backbone Network : Fiber Optic • Lack of terrestrial backbone network in Eastern Part of Indonesia due to geographical condition • Terrestrial Access Network has not covered entire Indonesian teritory • Blank spot area only served by satellite infrastructure Access Network : Cellular network • Satellite plays an important role in connecting Indonesia and serving the unserved areas • Indonesia is highly dependent on satellite Overview: Satellite Industry in Indonesia Indonesia satelit operator: 119 txp C and 5 txp Ku Not enough supply from National Satellite Operator From 2009-2016 : No added capacity from National Operator To fulfill demands, foreign satellites can provide service in Indonesia through national telco and broadcasting operators Threre are 34 foreign satellites provide service in Indonesia Number of Foreign Satellites Providing Service in Indonesia 35 34 30 25 22 20 18 15 10 10 9 5 5 2009 2010 2011 2012 2013 2014 0 .
    [Show full text]
  • Advances in Satellite Technologies- ISRO Initiatives
    Advances in Satellite Technologies- ISRO Initiatives Sumitesh Sarkar Space Applications Centre (ISRO) March 27, 2019 National Workshop on Advances in Satellite Technologies National Workshop on Advances in Satellite Technologies - Mach 27, 2019 Advance Technology : Key Areas Migration from Broadcast/VSAT centric to Data-centric Payload design - HTS . Multi-beam coverage in Ku and Ka-band ensuring Frequency Reuse and enhanced Payload performance . Increased Payload Hardware – need for miniaturization . Addressing new applications like Mobile backhauling, In-Flight Connectivity etc. Special focus on unserved/underserved regions within India Use of Higher frequency bands – Ku to Ka to Q/V band . Migration to higher frequency bands – ‘User ‘ as well as ‘Feeder’ links . More interference free Spectrum . Constraints of available technologies Redefining MSS with enhanced capabilities . Multi-beam High power transponders in S-band - enabling SDMB services National Workshop on Advances in Satellite Technologies - Mach 27, 2019 2 Evolution in On-board Antenna Technology Single Circular beam Shaped Beam Multibeam(HTS) (Dual Gridded Reflector) National Workshop on Advances in Satellite Technologies - Mach 27, 2019 Technology Trends – Active Low power RF Circuits MMIC SOC 9mm X 6mm Ka-band (In test) 100mmx40mm 70mmx60mm x25mm x22mm based based MMIC die in pac. pac. MMIC Chip MMIC LTCC pac. Qualified (In BB test) 100mmx100mm x25mm Gen In production by industry nd MIC based MIC 2 RF Technologies RF 170mmx100mmx35mm MIC MIC based 200mmx180mmx100mm (2RF sec.) 1stgen. INSAT-2A to INSAT-2D INSAT-3 and 4 Series GSAT-5 GSAT-7/11 Future technologies Payload Generation National Workshop on Advances in Satellite Technologies - Mach 27, 2019 High Throughput Satellite : GSAT-11 Features: .
    [Show full text]
  • Spectrum and the Technological Transformation of the Satellite Industry Prepared by Strand Consulting on Behalf of the Satellite Industry Association1
    Spectrum & the Technological Transformation of the Satellite Industry Spectrum and the Technological Transformation of the Satellite Industry Prepared by Strand Consulting on behalf of the Satellite Industry Association1 1 AT&T, a member of SIA, does not necessarily endorse all conclusions of this study. Page 1 of 75 Spectrum & the Technological Transformation of the Satellite Industry 1. Table of Contents 1. Table of Contents ................................................................................................ 1 2. Executive Summary ............................................................................................. 4 2.1. What the satellite industry does for the U.S. today ............................................... 4 2.2. What the satellite industry offers going forward ................................................... 4 2.3. Innovation in the satellite industry ........................................................................ 5 3. Introduction ......................................................................................................... 7 3.1. Overview .................................................................................................................. 7 3.2. Spectrum Basics ...................................................................................................... 8 3.3. Satellite Industry Segments .................................................................................... 9 3.3.1. Satellite Communications ..............................................................................
    [Show full text]
  • L-Shaped Monopole Antenna with Modified Partial Ground Plane for Multiband Operation
    International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, Volume-8 Issue-10, August 2019 L-Shaped Monopole Antenna with Modified Partial Ground Plane for Multiband Operation Prachi Pandey, Neelesh Agrawal, Mukesh Kumar, Navendu Nitin, Anil Kumar Abstract- In this paper a design of L-shaped monopole In [4] a meandered T-shaped monopole is proposed for antenna (LMA) with modified partial ground plane for multiband 2.45/5.2/5.8 GHz LAN operations with a long and a short operation is presented. The `dimension of proposed antenna is arm strip extended from the feedline. A compact improved 40× 47 mm2 with 1.6 height using Teflon substrate having T-Form monopole antenna [5] using two asymmetric dielectric constant 2.1. The ground plane is amended by inserting horizontal strips has been designed to achieve multiband an anti-symmetric horizontal L-slots. Single band to multiband behaviour is accomplished by applying two horizontal L-slots on operation. In [6] a C-shaped monopole antenna is designed partial ground plane of LMA. Both the slots are antisymmetric to having a shorted parasitic strip to obtain two separate Y-axis. The parametric study has also been done which is impedance bandwidth. Frequency agility, improved gain and responsible for antenna behaviour. The operating frequency beam forming can be attained by applying additional bands of designed antenna are 2.35-2.91GHz,3.24-3.51GHz dielectric layers. But additional layers increase the weight of ,4.31-5.30GHz and 5.90-6.31GHz which is suitable for Bluetooth the antenna which is again undesirable in wireless (2.4GHZ),WLAN (2.4GHz,5.2GHz), WiMAX (2.3GHz, 2.5GHz, environment.
    [Show full text]
  • A Layman's Interpretation Guide L-Band and C-Band Synthetic
    A Layman’s Interpretation Guide to L-band and C-band Synthetic Aperture Radar data Version 2.0 15 November, 2018 Table of Contents 1 About this guide .................................................................................................................................... 2 2 Briefly about Synthetic Aperture Radar ......................................................................................... 2 2.1 The radar wavelength .................................................................................................................... 2 2.2 Polarisation ....................................................................................................................................... 3 2.3 Radar backscatter ........................................................................................................................... 3 2.3.1 Sigma-nought .................................................................................................................................................. 3 2.3.2 Gamma-nought ............................................................................................................................................... 3 2.4 Backscatter mechanisms .............................................................................................................. 4 2.4.1 Direct backscatter ......................................................................................................................................... 4 2.4.2 Forward scattering ......................................................................................................................................
    [Show full text]
  • Spotlight on Asia-Pacific
    Worldwide Satellite Magazine June 2008 SatMagazine Spotlight On Asia-Pacific * The Asia-Pacific Satellite Market Segment * Expert analysis: Tara Giunta, Chris Forrester, Futron, Euroconsult, NSR and more... * Satellite Imagery — The Second Look * Diving Into the Beijing Olympics * Executive Spotlight, Andrew Jordan * The Pros Speak — Mark Dankburg, Bob Potter, Adrian Ballintine... * Checking Out CommunicAsia + O&GC3 * Thuraya-3 In Focus SATMAGAZINE JUNE 2008 CONTENTS COVER FEATURE EXE C UTIVE SPOTLIGHT The Asia-Pacific Satellite Market Andrew Jordan by Hartley & Pattie Lesser President & CEO The opportunities, and challenges, SAT-GE facing the Asia-Pacific satellite market 12 are enormous 42 FEATURES INSIGHT Let The Games Begin... High Stakes Patent Litigation by Silvano Payne, Hartley & Pattie by Tara Giunta, Robert M. Masters, Lesser, and Kevin and Michael Fleck and Erin Sears The Beijing Olympic Games are ex- Like it or not, high stakes patent pected to find some 800,000 visitors wars are waging in the global satel- 47 arriving in town for the 17-day event. 04 lite sector, and it is safe to assume that they are here to stay. Transforming Satel- TBS: Looking At Further Diversification lite Broadband by Chris Forrester by Mark Dankberg Internationally, Turner Broadcasting The first time the “radical” concept has always walked hand-in-hand with 54 of a 100 Gbps satellite was intro- the growth of satellite and cable – duced was four years ago, 07 and now IPTV. Here’s Looking At Everything — Part II by Hartley & Pattie Lesser The Key To DTH Success In Asia by Jose del Rosario The Geostationary Operational Envi- Some are eyeing Asia as a haven for ronmental Satellites (GOES) continu- economic safety or even economic ously track evolution of weather over growth amidst the current global almost a hemisphere.
    [Show full text]
  • Satellite Communications
    Satellite Communications Ashaad Rambharos CSE, Intelsat 1 Satellite Example IS904 • General Satellite Information • Spacecraft Type: Three-Axis Stabilized • Orbital Location: 60.0 ° East Longitude • Orbital Control: +/- 0.05 ° • Launch: 23 February 2002 2 IS904 Coverage maps 3 General Satellite Information cont • Payload: Up to 34 x 72 MHz C-Band transponders * • Up to 11 x 36 MHz C-Band transponders * • 2 x 41 MHz C-Band transponders • Up to 2 x 77 MHz Ku-Band transponders • Up to 6 x 72 MHz Ku-Band transponders • Up to 8 x 36 MHz Ku-Band transponders • Frequency Bands: • C-Band: Uplink 5850 – 6425 MHz • Downlink 3625 – 4200 MHz • Ku-Band: Uplink 14.00 – 14.50 GHz • Downlink 10.95 – 11.20 GHz (Band A) and • Downlink 11.45 – 11.70 GHz (Band B) • Beacons: • 3947.5 or 3948 MHz 3952 or 3952.5 MHz • 11198 MHz 11452 MHz 4 Intelsat 904 C-Band Payload • Number of Transponders: • Up to 34 x 72 MHz * • Up to 11 x 36 MHz * • 2 x 41 MHz • Transponder Bandwidth: • 72 MHz with 8 MHz Guard Bands • 36 MHz with 4 MHz Guard Bands • 41 MHz with 4 MHz Guard Bands • Polarization: Circular: LHCP and RHCP • SFD (at Beam Reference Contour): -67.0 to -89.0 dBW/m² • Input Attenuators: 22 dB in 2 dB steps • 5 Intelsat 904 C-Band Payload cont • G/T: > -11.2 dB/K typical for GA, GB > -7.4 dB/K typical for WH > -5.1 dB/K typical for EH > 0.0 dB/K typical for NWZ > -1.5 dB/K typical for NEZ, SEZ > -3.5 dB/K typical for MEZ > -5.0 dB/K typical for SWZ > -4.5 dB/K typical for CEZ (combined NEZ/SEZ) • EIRP: > 31.0 dBW typical for GA, GB > 40.1 dBW typical for Ch.
    [Show full text]
  • Considerations and Strategies for Maximizing C-Band Deployment
    Considerations and Strategies for Maximizing C-band Deployment Solutions and Best Practices Contents Abstract . 3 Introduction . 3 Beamforming. 4 Site Architecture ............................................................. 6 Coexistence with FSS. 7 Supply Power ................................................................ 8 Small Cells. 8 Fronthaul and Backhaul ...................................................... 10 Summary. 11 2 Considerations and Strategies for Maximizing C-band Deployment - Solutions and Best Practices Abstract The recently concluded C-band auction has created new opportunities to help mobile operators address the ever- growing need for network capacity, spectral efficiency and a migration path to 5G and beyond. As with all mobile technology innovations, the benefits the new C-band spectrum provides will depend on how operators plan for and implement it into their existing legacy networks. There are a number of key challenges, including the integration of advanced beamforming technologies, the rise of massive and multi-user MIMO, site architecture issues, potential interference with fixed satellite services and use with small cells, to name a few. This white paper provides a wide- angle perspective of some of the major challenges facing operators as they consider the strategies for deploying new C-band capabilities. It also shines a light on some of the innovative developments from leading network OEMs like CommScope. Introduction As we begin 2021, the first commercial 5G networks are well in 46 major markets in late 2021. The remaining 180 MHz over a year into operation. During the past year, 5G activities (3.8–3.98 GHz) will be added nationwide in a second phase on a have accelerated and now outpace the growth rate of all past timeline to be agreed upon by the parties in each market.
    [Show full text]
  • An Elementary Approach Towards Satellite Communication
    AN ELEMENTARY APPROACH TOWARDS SATELLITE COMMUNICATION Prof. Dr. Hari Krishnan GOPAKUMAR Prof. Dr. Ashok JAMMI AN ELEMENTARY APPROACH TOWARDS SATELLITE COMMUNICATION Prof. Dr. Hari Krishnan GOPAKUMAR Prof. Dr. Ashok JAMMI AN ELEMENTARY APPROACH TOWARDS SATELLITE COMMUNICATION WRITERS Prof. Dr. Hari Krishnan GOPAKUMAR Prof. Dr. Ashok JAMMI Güven Plus Group Consultancy Inc. Co. Publications: 06/2021 APRIL-2021 Publisher Certificate No: 36934 E-ISBN: 978-605-7594-89-1 Güven Plus Group Consultancy Inc. Co. Publications All kinds of publication rights of this scientific book belong to GÜVEN PLUS GROUP CONSULTANCY INC. CO. PUBLICATIONS. Without the written permission of the publisher, the whole or part of the book cannot be printed, broadcast, reproduced or distributed electronically, mechanically or by photocopying. The responsibility for all information and content in this Book, visuals, graphics, direct quotations and responsibility for ethics / institutional permission belongs to the respective authors. In case of any legal negativity, the institutions that support the preparation of the book, especially GÜVEN PLUS GROUP CONSULTANCY INC. CO. PUBLISHING, the institution (s) responsible for the editing and design of the book, and the book editors and other person (s) do not accept any “material and moral” liability and legal responsibility and cannot be taken under legal obligation. We reserve our rights in this respect as GÜVEN GROUP CONSULTANCY “PUBLISHING” INC. CO. in material and moral aspects. In any legal problem/situation TURKEY/ISTANBUL courts are authorized. This work, prepared and published by Güven Plus Group Consultancy Inc. Co., has ISO: 10002: 2014- 14001: 2004-9001: 2008-18001: 2007 certificates. This work is a branded work by the TPI “Turkish Patent Institute” with the registration number “Güven Plus Group Consultancy Inc.
    [Show full text]
  • Raytheon Missile Systems Application to Renew WF2XLI File No: 0036-EX-CR-2017
    Raytheon Missile Systems Application to Renew WF2XLI File No: 0036-EX-CR-2017 Explanation of Experiments and Need for Experimental License for use of Several Frequency Bands for Lab and Factory Missile Communications Testing Overview: Raytheon Missile Systems builds and sells missiles to the US military. As a part of the engineering development and production process, RMS tests communications systems in its products to make sure they meet customer specifications. Currently, RMS holds a license for operations in Tucson, Arizona and Camden, Arkansas, WF2XLI, for the ongoing operations it is requesting to renew. The ongoing experimental operations are for testing command and control systems in the lab and for factory missile communications testing. The four radio systems are used in the field by Raytheon’s customers for Range Safety. The four radio systems used for testing are the Flight Terminate Receiver (UHF), the L- band telemetry transmitter, the S-Band telemetry transmitter, and the C-Band transponder. These systems must be tested and retested as part of the production process for the Range Flight Safety System. This license uses the systems installed on missiles that will be tested at government ranges. Prior to delivery of the product to the customer, the product must be tested as part of engineering development and production testing. The actual missile flight testing is conducted at government test and training ranges using federal frequency assignments. Since the lab and production testing is ongoing at Raytheon’s facilities, and because some of the work being done is actually internal to Raytheon as part of independent research and development, it is necessary to renew this experimental authorization to allow for the proper, licensed operation of the missile during development and production testing.
    [Show full text]
  • Satellite and Terrestrial Hybrid Networks
    RTT TECHNOLOGY TOPIC July 2007 Satellite and terrestrial hybrid networks In this month's Technology Topic we analyze how the dynamics of the satellite business are changing and what this means for the global cellular operator and terrestrial broadcasting community. In particular we study the impact of hybrid satellite terrestrial systems on present cellular and terrestrial broadcast business models. Dual mode networks that combine satellite and GSM cellular services already exist. Thuraya, a network operator servicing the United Arab Emirates and ACeS servicing Asia are two present examples. Hybrid satellite/terrestrial systems are different in that they use terrestrial repeaters to combine the wide area coverage capabilities of satellites with the urban coverage and in building capabilities provided from terrestrial networks. These may or may not be associated with existing cellular or terrestrial broadcast networks. The terrestrial repeaters are described in the US as Ancillary Terrestrial Components (ATC) and in Europe and Asia as Ground Based Components. In China the networks are described as Satellite and Terrestrial Interactive Multi Service Infrastructure (STiMI). Hybrid networks are already used in the US to deliver audio broadcasting for in car and more recently in flight entertainment. Widespread deployments of these systems are planned both for audio and TV broadcasting and for two way cellular service provision. These deployments exploit already allocated L Band and S Band spectrum in US and rest of the world markets. Some of this spectrum has been gifted to the operators. Typically these allocations are not owned by traditional terrestrial cellular or terrestrial broadcast service providers. As such they represent a competitive threat and by implication a collaborative opportunity for the cellular network operator and traditional terrestrial broadcast community.
    [Show full text]
  • Airborne Radio Frequency Interference Studies at C-Band Using a Digital Receiver
    Airborne Radio Frequency Interference Studies at C-band using a Digital Receiver J. T. Johnson, A. J. Gasiewski∗, G. A. Hampson, S. W. Ellingson†, R. Krishnamachari, and M. Klein∗ Dept. of Electrical Engineering and ElectroScience Laboratory The Ohio State University Columbus, OH 43210, USA Email: [email protected] ∗ NOAA Environmental Technology Laboratory R/ET1, Room 3B-157, 325 Broadway Boulder, CO 80305-3328, USA Email: [email protected] †Department of Electrical and Computer Engineering, Virginia Tech 340 Whittemore Hall, Blacksburg, VA 24061 USA Email: [email protected] Abstract— An airborne system for observing radio frequency this digital receiver is capable of providing highly detailed interference at C-band is described. The digital receiver included information on RFI properties as well as implementing some has the capability of providing high temporal and spectral reso- simple RFI mitigation strategies. lution of interference, as well as implementing simple mitigation strategies. Plans for observations with the system are discussed. The next section of the paper provides a brief discussion of RFI issues for traditional microwave radiometers, while I. INTRODUCTION Section III describes a basic block diagram of the system The absence of a protected portion of the spectrum at C- developed. Section IV then provides more information on the band [1] makes radio frequency interference (RFI) a major digital receiver, and Section V describes preliminary plans for concern for C-band microwave radiometry. The C-band chan- flights and experiments. nel of the AMSR-E radiometer on the AQUA satellite has already shown a major corruption of data over a large percent- II.
    [Show full text]