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

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.