Grundig manual Synergies with Digital Radio Mondiale DRM

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DIGITAL RADIO GUIDE

TERRESTRIAL TRANSMISSION SYSTEMS - DAB

services to individual clients or relatively small groups of clients. The telecom systems are technically able to provide services to several users in the same time, providing that the number of simultaneous users (or, in other words, the total bandwidth capacity) does not exceed a certain level, or else the network collapses rapidly. Also, the use of telecom services in the "one-to-many" scenario is much more expensive for the user than the use of DAB (or DVB) broadcast systems.

It may be advantageous for both broadcasters and telecoms to provide a combination of both one-to-many and one-to-one applications concurrently. For example, a traffic/travel information service may consist of two parts: a basic part and a value-added part. The former would be carried over the broadcast network to everybody (possibly for free), whereas the latter would be available on-demand over the telecom network and would be paid-up according to a tariff agreed.

As an example of such synergy, Nagra-Futuris has created an IT infrastructure for hosting end-to-end interactive services based on the existing GSM and DAB technologies. The system provides back-channel communication, conditional access, data warehousing, integrated billing/clearing and interfacing to external M- commerce providers. The system allows for deployment of interactive services and dynamic insertion of programme related data. The mobile terminal device is a combination of mobile phone and DAB receiver. It contains a DAB Identification Module (DIM).

The EBU have identified many attractive interactive applications and business opportunities based on DAB/GSM synergy. Such synergetic services may help telecoms to generate more traffic and offer new, rich-content services (games, live and on-demand video/audio clips, etc.).

Synergies of GSM and DAB networks may be useful in the case of DAB single- frequency networks (SFN) at L-Band. To set up an SFN network at L-Band, the transmission sites must not be any further than 18 km apart using Transmission Mode II in order to maintain network timing and to benefit from the network gain of an SFN. Therefore an ideal SFN at L-Band could emulate the infrastructure of mobile phone networks with lower masts and powers.

(2)Synergies with Digital Radio Mondiale (DRM)

DAB and DRM are complementary as they target different markets. DAB is mainly intended for local, regional and national audiences. DRM is designed to be deployed in the frequency bands below 30 MHz to replace existing AM services and targets more large coverage zones. This system has been successfully standardised within ITU and ETSI and is now being implemented in the commercial market. Future listeners will be interested in all services provided by digital radio, hence radio sets should enable the users to receive any digital radio service without concern for the transmission system. In terms of the technologies used, both systems are not too dissimilar; for example, both are using COFDM and similar channel coding strategies. To this end, common integrated circuits are being developed and integrated DAB/DRM receivers could soon appear in the market. A common interface for external devices is also being developed.

In August 2003, DRM and WorldDAB announced they would collaborate in the development of their systems." Reference: http://www.worlddab.org/press.aspx

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Contents Page Page Foreword Page Table of Contents Appendix C Glossary of Acronyms Introduction What is Digital Radio? DRM+ Terrestrial in service date Satellite Service dateDigital Radio Systems Why Digital Radio? Terrestrial Transmission Systems DRM Digital Radio MondialeBrief Description of the DRM System Overall designDistribution Interface Audio Source Coding DRM Source Encoding and DecodingDRM Source Decoding Channel coding and modulation Transmitter Considerations Over the air4 DRM+ Principal Advantages and Challenges DAB EurekaSystem Development System DescriptionChallenges Canada DAB Development Worldwide asBelgium DenmarkItaly FranceGermany SingaporeSweden South KoreaSpain SwitzerlandUnited Kingdom Infrastructure Requirements Eureka 147 Main System FeaturesMain System Features Synergies with Other SystemsSynergies with Digital Radio Mondiale DRM DAB-Based Multimedia Broadcast Systems DMB T-DMB Future Developments of DABSynergies with Digital Television German DXB Project IP over Enhanced Packet ModeDAB-IP DAB as carrier of multichannel audio Enhanced Audio Codec, DAB+Digital Radio Guide Terrestrial Transmission Systems DAB Conceptual diagram of the outer coder and interleaver Types of ReceiversHandheld Receivers In-Home ReceiversIn-Car Receivers PC ReceiversList of manufacturers and their DAB products JVCTeac Methods Japans Digital Radio Broadcasting ISDB-TSBOverview Audio encoding systemTransmission channel encoding system Modulation method Error correction systemMultiplexing System Transmission bandwidthsData Segment Spectra Hierarchical transmission and partial receptionPage Example of connected transmission three TS’s Parameter restrictions in connected transmissionTransmission capacities Information bit rates for the triple-segment transmission*5Characteristics ReceiversReceivers expected Overview of ServicesTrial receivers Multiple voice broadcastingBroadcasting of simplified moving images Download service experimentOutlook for the Future IBiquity HD Radio System HD Radio Standards Activity HD Radio AM and FM ReceiversHD Radio System Technical Design Overview Typical HD Radio Automobile ReceiversStation Information Service SIS Core ServicesMain Program Service MPS Advanced Application Services AASFM Extended Hybrid Waveform Waveforms and SpectraHybrid Waveform FM All Digital Waveform HD Radio Subsystems 12 Hybrid AM HD Radio system spectrum allotment13 Functional Block Diagram of HD Radio System Receiver Systems RF/Transmission SystemMultipath Resistance Features Common to North American Digital Radio SystemsSound Quality Frequency Response Audio Quality RatingsMpeg AAC Infrastructure Requirements Deployment Status LicenseesCase Study Allocations in Region Issues related to Terrestrial SystemsSpectrum Availability 18 RRC-06 planning area DAB DVB-T19 T-DAB coverages in Band Entries Implications of Simulcasting HD Radio IbocCoverage DRM Digital Radio MondialeDigital Radio Guide Terrestrial Transmission Systems Issues Broad Picture Satellite TransmissionWorldSpace ITU-R System D WorldSpace Coverage Map Transmission Footprints WorldSpace Up-link Coverage JVC Sirius Satellite Radio / XM Satellite Radio Sirius Overview Sirius Sdars Delivery System Sirius Constellation RaanSirius Ground Track Continental US Satellites Ground Deployment StatusTT&C RepeatersMobile Broadcasting Corp. and TU Media Corp. ITU-R System E Bringing Radio to the Internet Internet Radio IRIntroduction Internet Radio peculiarities Internet Radio as a complement to established radio services Streaming technology for radio services Internet-only stations IR Portals and Music PortalsServer-client Distribution networksWiMAX Multicasting P2P networksInternet Radio terminals and playback devices PodcastingInternet Radios relation with the traditional radio Measuring audience Digital Radio Guide Internet Radio Virgin Radio Case studies10.1 VRT Summary and Conclusions Swedish Radio multichannel audio distributionLaunch Music on Yahoo Launch.yahoo.com Some Important Radio PortalsBeethoven LiveLast FM IM TuningRadio VH1 MTV RadioSHOUTcast Some Sources for the Digital Radio Guide Etsi Cenelec IEC Digital Radio Guide Sources Overview Major System FeaturesAppendix a The Eureka 147 System System Description III Modes of OperationTable A.1 Eureka 147 Transmission Parameters Data CapacityData Services Number of audio services in a multiplexAudio Quality Spectrum Issues Eureka 147 Channel PlansTable A.2 Example of possible number of programs Planning Parameters ITU DSB HandbookBand 1452-1492 MHz Propagation PropertiesVHF Band Recent system developments Multimedia Object Transport MOTDynamic Label Electronic Programme Guide EPG Broadcast WebsiteSlide Show DAB Virtual Machine DAB Java EtsiConditional Access DAB Receiver InterfacesTopNews SBR LayerFile caching in the receiver IP datacasting in DAB Tpeg transport in DABNumber Title Advanced demodulation technique for CofdmTable A.3 Etsi Standards relating to Eureka Third EditionGSM / Pstn / Isdn / Dect Reference Title Receiver StandardsTable A.4 Receiver Standards for Eureka ITU Publications and RecommendationsNasb Appendix B Relevant World Wide WebsitesBBC DAB 111 Glossary of Acronyms DRM DRBDrdb DRPISDB-TSB IeeeIfpi ITUPDA P2PPAD PNGTMC TDMTdma TmccDisclaimer

Digital Radio specifications

The Grundig Digital Radio represents a significant advancement in radio technology, combining aesthetics, functionality, and a user-friendly interface. As a pioneer in the audio and electronics industry, Grundig has successfully integrated modern digital capabilities into its traditional radio design, appealing to both nostalgic listeners and tech-savvy users.

One of the standout features of the Grundig Digital Radio is its versatility in reception. With DAB+ (Digital Audio Broadcasting) technology, users can enjoy a wide array of radio stations with superior sound quality, free from the hiss and interference commonly associated with analog broadcasts. The inclusion of FM and AM bands ensures that listeners are not limited, providing access to local stations that may not yet have transitioned to digital.

The Grundig Digital Radio is designed with ease of use in mind. Its intuitive interface, often featuring a clear LCD display, allows users to navigate through stations and settings effortlessly. Many models also include a built-in tuner that automatically scans and presets available stations, simplifying the setup process. For those who appreciate personalization, some variants come equipped with customizable presets, allowing users to save their favorite stations for quick access.

Portability is another key characteristic of the Grundig Digital Radio. Many models are lightweight and come with built-in handles, making them ideal for on-the-go listening, whether it's in the garden, on the beach, or during a picnic. Battery options, alongside mains power, ensure that users can take advantage of their radios wherever they choose.

In terms of sound quality, Grundig utilizes advanced audio technologies to deliver rich and clear sound. Enhanced bass responses and treble controls allow users to fine-tune their listening experience to match their preferences. Furthermore, many models feature additional inputs, such as AUX and USB ports, enabling users to connect their smartphones or other devices, expanding their audio options.

Other notable characteristics include built-in alarms and timers, which make the Grundig Digital Radio a versatile companion for daily routines. Some models even support Bluetooth connectivity, allowing for seamless streaming from a variety of devices.

In summary, the Grundig Digital Radio embodies the perfect blend of traditional radio appeal and modern digital technology, offering versatility, ease of use, superior sound quality, and portability to meet the diverse needs of today’s listeners. Its well-thought-out features and user-friendly design make it an excellent choice for anyone looking to enhance their audio experience.
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