The introduction of digital multimedia broadcasting

Satellite systems are actually part of a large group of radio and television, which experts call Digital Multimedia Broadcasting or DMB. This digital transmission system used to send data to different receivers such as radios, televisions or cell phones and PDAs. There are two ways of using Digital Multimedia Broadcasting - S-DMB, which is broadcast via satellite, or T-DMB uses terrestrial transmitters. The complexity of the box the whole Digital Multimedia Broadcasting is enormous. Of all the features and characteristics digital broadcasting offers, satellite radio is probably the most spectacular as it generated immense interest and triggered an intense competition between the two major satellite radio, Sirius and XM Radio. The development of satellite radio and other forms of digital television is spectacular because it offers two features that the terrestrial transmitters are deficient in: quality and coverage.

In the case of satellite radio, for example, the sound quality of a satellite broadcast is much higher than AM or FM broadcasts, such as hiss and transmission problems are eliminated.
If you refer to your radio broadcasts, satellite TV and mobile broadcasting, digital media is based on the Eureka 147 DAB standard. Digital television uses the T-DMB, which is made for transmissions on frequency bands III (VHF) and L (SHF). T-DMB is an ETSI standard (TS 102 427 and TS 102 428).
T-DMB uses MPEG-4 Part 10 (H264) for V2 video and MPEG-4 Part 3 BSAC or HE-AAC for audio. When it comes to satellite radio, there were some problems to be solved by the main radio stations via satellite. satellite radio receiver must be in order to receive the satellite transmission - and this is the problem of having different landscaping objects block the direct transmission. terrestrial devices were installed to eliminate the lack of direct satellite transmission. Since the widest range of emissions must be covered, Digital Multimedia Broadcasting user OFDM modulation 4DPSK and a receiver chip T-DMB is also provided by MPEG-2 Transport Stream De-multiplexer. This reduces the negative effects of observation and fading are present in many digital transmissions.

The transfer from analog to digital world is evident in all areas of work. As digital multimedia broadcasting is developing very rapidly, there is a silent battle going on between the new era of digital technology and traditional analog. Of course, many compare the transition from analogue to fully digital age with the way the tapes were replaced by CDs and DVDs even later. But the development of digital multimedia broadcasting is slower, as happens at many levels simultaneously. Digital TV takes us into new spaces that are basically hybrids of the features of a regular TV and characteristics of the Internet. Satellite radio is also the huge leap forward with programs that increasingly exclusive satellite radio. There is even talk of moving events as the MLB exclusively on satellite radio, which would give the first deadly attack against terrestrial radio.

Digital data transmission is quick and precise, and so far the reality is that satellites are used to facilitate the dissemination and reliable. Most digital multimedia broadcasting companies that own satellites also have backup ready to go into orbit and replace a defective product. Some other advantages of digital multimedia broadcasting, it is recommended that the next step in the development of broadcasting. From the perspective of consumers, quality options and interactive digital television or satellite radio are important features. Although most of the digital multimedia broadcasting channels and technologies are always complex and expensive, sometimes, the evolution of digital broadcasting seems to have come to stay.

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