Grundig Digital Radio Multiplexing System, Transmission channel encoding system Modulation method

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DIGITAL RADIO GUIDE

TERRESTRIAL TRANSMISSION SYSTEMS - ISDB-TSB

from the consideration of cross-media communications. Introduction of charged broadcasting depends on the result after the feasibility is examined.

(3)Multiplexing System

MPEG-2 system has been adopted, therefore various digital contents such as sound, text, still picture, moving picture and data can be transmitted simultaneously.

In addition, cross-media communications were considered because MPEG-2 system has been adopted in terrestrial digital TV broadcasting, BS digital broadcasting and CS digital broadcasting.

(4)Transmission channel encoding system Modulation method

OFDM method that withstands interference with multiple paths has been adopted. One of DQPSK (Differential Quadrature Phase Shift Keying), QPSK, 16 QAM (Quadrature Amplitude Modulation), and 64 QAM can be used. Since different forms of broadcasting are expected, parameters are available for setting carrier modulations and coding rate of inner code.

Error correction system

Reed solomon (204, 188) for external signalling and convolution coding (convolution rates: 1/2, 2/3, 3/4, 5/6, 7/8) for internal signalling have been adopted.

The adoption resulted from the consideration of high coding efficiency and high burst error correction capability for external signalling, various options of coding rates for internal signalling and cross-media communications.

According to the broadcaster's purpose, they can select the carrier modulation method, error correction coding rate, etc., of the system. The TMCC (Transmission and Multiplexing Configuration Control) carrier transmits the information to the receiver pertaining to the kind of modulation method and coding rate used in the system.

(5)Transmission bandwidths

A transmission bandwidth that uses one OFDM segment of 6/14 MHz (approx. 429 kHz) bandwidth has been primarily adopted. In addition, a transmission bandwidth that uses three OFDM segments is also available.

Figure 4.4 shows ISDB-TSB and full-band ISDB-T transmission concept and its reception.

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Contents Page Page Foreword Page Table of Contents Appendix C Glossary of Acronyms Introduction What is Digital Radio? Terrestrial in service date Satellite Service date Digital Radio SystemsDRM+ 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 Future Developments of DAB Synergies with Digital TelevisionDAB-Based Multimedia Broadcast Systems DMB T-DMB IP over Enhanced Packet Mode DAB-IPGerman 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 broadcastingDownload service experiment Outlook for the FutureBroadcasting 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 AASWaveforms and Spectra Hybrid WaveformFM 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 SystemFeatures Common to North American Digital Radio Systems Sound QualityMultipath Resistance Frequency Response Audio Quality RatingsMpeg AAC Infrastructure Requirements Deployment Status LicenseesIssues related to Terrestrial Systems Spectrum AvailabilityCase 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 Satellite Transmission WorldSpace ITU-R System DBroad 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 Internet Radio IR IntroductionBringing 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 Case studies 10.1 VRTVirgin 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 Major System Features Appendix a The Eureka 147 System System DescriptionOverview Modes of Operation Table A.1 Eureka 147 Transmission ParametersIII Data CapacityData Services Number of audio services in a multiplexSpectrum Issues Eureka 147 Channel Plans Table A.2 Example of possible number of programsAudio Quality Planning Parameters ITU DSB HandbookPropagation Properties VHF BandBand 1452-1492 MHz Recent system developments Multimedia Object Transport MOTDynamic Label Broadcast Website Slide ShowElectronic Programme Guide EPG DAB Virtual Machine DAB Java EtsiConditional Access DAB Receiver InterfacesSBR Layer File caching in the receiverTopNews 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 RecommendationsAppendix B Relevant World Wide Websites BBC DABNasb 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.