Digital audio broadcasting
Summary :
Table of Contents
- Abstract
- Introduction
- Main features of dab system
- Flexible audio bite-rate
- Data services
- Programme Associated Data (PAD)
- Conditional Access (CA)
- Service Information (SI)
- Generation of DAB signal
- Various Services
- Audio services
- Data services
- Conclusion
- Bibliography
Abstract
digital audio broadcasting, DAB, is the most fundamental advancement in radio technology. It gives listeners interference- free reception of high-quality sound, easy-to-use radios, and the potential for wider listening choice through many additional stations and services. DAB is a reliable multi- service digital broadcasting system for reception by mobile, portable and fixed receivers with a simple, non-directional antenna. It can be operated at any frequency from 30 MHz to 3 GHz for mobile reception (higher for fixed reception) and may be used on terrestrial, satellite, hybrid (satellite with complementary terrestrial) and cable broadcast networks. In addition to supporting audio programs with a wide range of sound coding rates and hence qualities, it also has a flexible, general purpose digital multiplex which can carry a number of services, including audio-program associated data and independent data services. It is the only system available in the world to meet all the demanding requirements drawn up by the International Telecommunications Union (ITU), thus opening horizons for all-digital broadcasting of the future. This review paper would give the brief idea about the technologies involved in the digital audio broadcasting.
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