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WBU Radio Techologies Guide.Pdf FOREWORD The purpose of the Digital Radio Guide is to help engineers and managers in the radio broadcast community understand options for digital radio systems available in 2017. The guide covers systems used for transmission in different media, but not for programme production. The in-depth technical descriptions of the systems are available from the proponent organisations and their websites listed in the appendices. The choice of the appropriate system is the responsibility of the broadcaster or national regulator who should take into account the various technical, commercial and legal factors relevant to the application. We are grateful to the many organisations and consortia whose systems and services are featured in the guide for providing the updates for this latest edition. In particular, our thanks go to the following organisations: • European Broadcasting Union • North American Broadcasters Association • Digital Radio Mondiale • HD Radio • WorldDAB Forum Amal Punchihewa Vice Chairman World Broadcasting Unions - Technical Committee June 2017 2 TABLE OF CONTENTS 1. INTRODUCTION ................................................................................................................................ 6 2. WHAT IS DIGITAL RADIO? ............................................................................................................. 8 3. WHY DIGITAL RADIO? ...................................................................................................................10 4. TERRESTRIAL TRANSMISSION SYSTEMS ..................................................................................11 4.1 DAB/DAB+/DMB ..........................................................................................................................11 4.1.1 System Development ..............................................................................................................11 4.1.2 DAB/DAB+ adoption ............................................................................................................12 4.1.3 Principal Advantages and Challenges ..................................................................................13 4.1.4 DAB Family of Standards Global Overview .........................................................................15 4.1.5 Infrastructure Requirements .................................................................................................16 4.1.6 Synergies with Other Systems ...............................................................................................17 4.1.7 Receivers ................................................................................................................................17 4.1.8 WorldDAB Receiver Profiles .................................................................................................19 4.2 DRM – DIGITAL RADIO MONDIALE .................................................................................................19 4.2.1 Key Features of the System Design for the Markets to be Served by the DRM System .........20 4.2.2 Brief Description of the DRM System ....................................................................................22 4.2.3 Transmitter Considerations ...................................................................................................29 4.2.4 Further Information ...............................................................................................................30 4.3 JAPAN'S DIGITAL RADIO BROADCASTING (ISDB-TSB) ...................................................................31 4.3.1 Overview ................................................................................................................................31 4.3.2 The Methods ..........................................................................................................................31 4.3.3 Characteristics.......................................................................................................................37 4.3.4 Receivers ................................................................................................................................38 4.3.5 Overview of Services..............................................................................................................39 4.3.6 Outlook for the Future ...........................................................................................................39 4.4 HD RADIO SYSTEM ..........................................................................................................................41 4.4.1 HD Radio Standards Activity .................................................................................................42 4.4.2 HD Radio AM and FM Receivers ..........................................................................................43 4.4.3 HD Radio System Technical Design Overview ......................................................................45 4.4.4 Core Services .........................................................................................................................46 4.4.5 HD Radio Subsystems ............................................................................................................52 4.4.6 RF/Transmission System ........................................................................................................53 4.4.7 Receiver Systems ....................................................................................................................54 4.4.8 Common System Features ......................................................................................................55 7 4.4.10 Deployment Status ............................................................................................................59 4.4.11 Latest updates from NABA ................................................................................................63 5. DIGITAL RADIO, SMART RADIO AND HYBRID RADIO ...........................................................70 5.1 DIGITAL RADIO IN APAC AND BEYOND...........................................................................................70 5.2 TECHNOLOGY POSITION IN APAC ...................................................................................................70 5.3 KEY SUCCESS FACTORS FOR RADIO DIGITISATION ............................................................................71 5.4 THE KEY SUCCESSES FACTORS THAT ARE DESCRIBED IN THE REPORT ARE: ......................................72 6. ISSUES RELATED TO TERRESTRIAL SYSTEMS ........................................................................74 6.1 SPECTRUM AVAILABILITY ...............................................................................................................74 6.2 THE IMPLICATIONS OF SIMULCASTING .............................................................................................78 6.2.1 Coverage ................................................................................................................................79 7. INTERNET RADIO ............................................................................................................................81 4 7.1 DOT.RADIO INITIATIVE .....................................................................................................................81 7.2 VARIOUS SERVICES ..........................................................................................................................83 8. SUMMARY AND CONCLUSIONS ..................................................................................................85 9. SOME SOURCES FOR THE DIGITAL RADIO GUIDE ..................................................................86 10. APPENDIX-A THE EUREKA 147 SYSTEM - SYSTEM DESCRIPTION .....................................89 11. APPENDIX-B: HD RADIO SYSTEM DESCRIPTION ..................................................................108 12. APPENDIX-C RELEVANT WORLD WIDE WEBSITES ..............................................................121 13. APPENDIX-D GLOSSARY OF ACRONYMS ................................................................................122 14. DISCLAIMER ..................................................................................................................................128 5 DIGITAL RADIO GUIDE INTRODUCTION 1. Introduction Digital technology has steadily transformed the way in which programmes are made in the last twenty years. Broadcasters have invested in digital systems for contribution and production and for some the switch from analogue to digital is moving along the broadcasting chain into transmission. At the same time, digital developments are drawing together the broadcasting, telecommunications and computer industries in a process of convergence. For all broadcasters, this is leading to a new and challenging business environment. This guide is designed to help managers, including those in developing countries, identify the technical and business forces that are driving the analogue to digital conversion process. There are many benefits for radio broadcasters in adopting digital technology in radio broadcasting. There is a significant difference in the analogue to digital transition for television and radio. The transition from analogue to digital television has usually been driven by a national plan for the transition, which has necessarily included the switching off of analogue television according to a prescribed timetable, though there are still nations continuing with analogue
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