Digital
audio broadcasting, DAB, is the most fundamental advancement in radio technology
since that introduction of FM stereo radio. It gives listeners interference -
free reception of CD 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 36Hz for mobile reception (higher for
fixed reception) and may be used on terrestrial, satellite, hybrid (satellite
with complementary terrestrial) and cable broadcast networks.
DAB
system is a rugged, high spectrum and power efficient sound and data broadcasting
system. It uses advanced digital audio compression techniques (MPEG 1 Audio layer
II and MPEG 2 Audio Layer II) to achieve a spectrum efficiency equivalent to or
higher than that of conventional FM radio.The efficiency of use of spectrum is
increased by a special feature called Single. Frequency Network (SFN). A broadcast
network can be extended virtually without limit a operating all transmitters on
the same radio frequency.
