Grundig Digital Radio manual IP over Enhanced Packet Mode, Dab-Ip, German DXB Project

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DIGITAL RADIO GUIDE

TERRESTRIAL TRANSMISSION SYSTEMS - DAB

T-DMB receiving devices have become available and are integrated within mobile phones, in portable PCs and small screen portable devices. Several pilot trials and projects are ongoing in Korea, UK, Germany, France and elsewhere. It should be noted that Korea has deployed both Satellite (S-) and Terrestrial (T-) DMB, although these have limited technical similarities leading to very different terminal devices. T-DMB was introduced in Korea in mid-2005 using an existing terrestrial network in Band III (although formal commercial launch has been delayed whilst business issues are coordinated). Frequencies in L-Band are available in much of Europe for possible use with DMB and DAB.

European T-DMB was officially launched on 7 June 2006 in Munich on the occasion of the World Football Cup. The launch was organized by WorldDAB and its partners.

(a)IP over Enhanced Packet Mode

Enhanced Packet Mode (EPM) provides additional error protection for DAB packet mode-based services, such as IP and MOT (Multimedia Object Transfer), by the use of a DAB-FEC frame and the addition of FEC packets (in a similar way to the DVB-H MPE-FEC). The same Reed-Solomon code is used as in DMB. Interleaving is different from T-DMB and allows backwards- compatible reception of EPM services on receivers with conventional DAB packet mode. The EPM specification has been submitted to ETSI.

(b)DAB-IP

The BT Movio's "DAB-IP" system is a DAB application of IP over Enhanced Packet Mode. Technical trials in UK by British Telecom started mid-2005 and ran through to the end of December 2005. Microsoft’s solution for video and audio coding as well as digital rights management (DRM) have been selected for this pilot. The electronic programme guide (EPG) designed for BT Movio and standardized by ETSI proved quite successful. DAB-IP enables DAB digital radio to share multiplex capacity with mobile TV and therefore allows TV operators to benefit from the considerable DAB spectrum and infrastructure investments that have been made across Europe. The prototype DAB-IP devices were based on a fully functioning 2.5G mobile phone which included an integrated DMB receiver, so that users could enjoy broadcast digital TV and radio services using advanced EPG.

(c)The German DXB Project

Digital Extended Broadcasting (DXB) is a German-funded project running until 2007. The DXB concept will offer similar services to DVB-H over a DAB- based transmission system. Services may use the IP-protocol over Enhanced Stream Mode (using MPEG-2 TS as with DMB) or via the Enhanced Packet Mode.

It should be observed that an alternative broadcast system for mobile multimedia applications is being developed in the framework of the DVB Project: DVB-H (H stands for handheld). Some EBU research institutes are in the process of looking into the technical and operational merits of DVB-H and

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Contents Page Page Foreword Page Table of Contents Appendix C Glossary of Acronyms Introduction What is Digital Radio? Digital Radio Systems Terrestrial in service date Satellite Service dateDRM+ 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+ DAB Eureka System DevelopmentPrincipal Advantages and Challenges System DescriptionChallenges DAB Development Worldwide as BelgiumCanada DenmarkFrance GermanyItaly SingaporeSouth Korea SpainSweden SwitzerlandUnited Kingdom Eureka 147 Main System Features Main System FeaturesInfrastructure Requirements Synergies with Other SystemsSynergies with Digital Radio Mondiale DRM Synergies with Digital Television Future Developments of DABDAB-Based Multimedia Broadcast Systems DMB T-DMB DAB-IP IP over Enhanced Packet ModeGerman DXB Project 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 ReceiversIn-Home Receivers In-Car ReceiversHandheld Receivers PC ReceiversList of manufacturers and their DAB products JVCTeac Japans Digital Radio Broadcasting ISDB-TSB OverviewMethods Audio encoding systemError correction system Multiplexing SystemTransmission channel encoding system Modulation method 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 ReceiversOverview of Services Trial receiversReceivers expected Multiple voice broadcastingOutlook for the Future Download service experimentBroadcasting of simplified moving images IBiquity HD Radio System HD Radio Standards Activity HD Radio AM and FM ReceiversHD Radio System Technical Design Overview Typical HD Radio Automobile ReceiversCore Services Main Program Service MPSStation Information Service SIS Advanced Application Services AASHybrid Waveform Waveforms and SpectraFM Extended Hybrid 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 SystemSound Quality Features Common to North American Digital Radio SystemsMultipath Resistance Frequency Response Audio Quality RatingsMpeg AAC Infrastructure Requirements Deployment Status LicenseesSpectrum Availability Issues related to Terrestrial SystemsCase Study Allocations in Region 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 WorldSpace ITU-R System D Satellite TransmissionBroad Picture 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 Deployment Status TT&CContinental US Satellites Ground RepeatersMobile Broadcasting Corp. and TU Media Corp. ITU-R System E Introduction Internet Radio IRBringing Radio to the Internet 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 10.1 VRT Case studiesVirgin Radio Summary and Conclusions Swedish Radio multichannel audio distributionSome Important Radio Portals BeethovenLaunch Music on Yahoo Launch.yahoo.com LiveIM Tuning Radio VH1Last FM MTV RadioSHOUTcast Some Sources for the Digital Radio Guide Etsi Cenelec IEC Digital Radio Guide Sources Appendix a The Eureka 147 System System Description Major System FeaturesOverview Modes of Operation Table A.1 Eureka 147 Transmission ParametersIII Data CapacityData Services Number of audio services in a multiplexTable A.2 Example of possible number of programs Spectrum Issues Eureka 147 Channel PlansAudio Quality Planning Parameters ITU DSB HandbookVHF Band Propagation PropertiesBand 1452-1492 MHz Recent system developments Multimedia Object Transport MOTDynamic Label Slide Show Broadcast WebsiteElectronic Programme Guide EPG DAB Virtual Machine DAB Java EtsiConditional Access DAB Receiver InterfacesFile caching in the receiver SBR LayerTopNews IP datacasting in DAB Tpeg transport in DABAdvanced demodulation technique for Cofdm Table A.3 Etsi Standards relating to EurekaNumber Title Third EditionGSM / Pstn / Isdn / Dect Receiver Standards Table A.4 Receiver Standards for EurekaReference Title ITU Publications and RecommendationsBBC DAB Appendix B Relevant World Wide WebsitesNasb 111 Glossary of Acronyms DRB DrdbDRM DRPIeee IfpiISDB-TSB ITUP2P PADPDA PNGTDM TdmaTMC 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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