Translation with SYSTRAN Links

The terrestrial digital radio

The terrestrial digital radio

The digital radio consists, as for digital television, in the diffusion of a binary digit, i.e. only composed of a succession of 0 and 1, on wavebands (band III and bandages L mainly) different from those used for FM (band II). 

This mode of transmission supposes a digitalization preliminary to the transmission of the signal.

The difference in nature of the signal requires, as for digital television, to have a specific receiver, the analogical receivers not being able to decode a digital signal.

The receivers of digital radio are also designed to display data associated with the sound, in the form of text, of images or videos diffused on a screen integrated into the receiver.

The digital radio has existed for several decades in satellite form and also on Internet.

The hertzian diffusion of the digital radio, commonly called terrestrial digital radio (RNT), is the object of more recent developments, since the beginning of the years 1990 (Club Usually).

It is based on the principle of the multiplexing: whereas into analogical a frequency only one radio conveys at the same time, in RNT each frequency conveys several services of radios, their number varying according to the flow which is allocated individually (and thus associated sound quality and data): more this flow is important, better will be sound quality, but less the number of services will be important.

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