OIV DAB+ Digital Radio is a platform to air a DAB+ (Digital Audio Broadcasting) radio signal which offers listeners the possibility of receiving a radio signal without interference, and gives broadcasters a greater selection of programming with clear audio quality and additional text and graphic services that accompany the audio content.
Radio broadcasting of high-quality digital audio/video programming and data services
Availability of multimedia content and services (motor vehicles, digital receivers, cell phones)
The VHF (very high frequency) range from 174 to 240 MHz is used to transmit DAB+. Since this is a digital network that is based on OFDM (orthogonal frequency-division multiplexing), operation in the SFN(single frequency network) has been enabled, i.e.,transmission in a single frequency in a single region or an entire country.
AAC+ (high-efficiency advanced audio coding) is used to code audio signals.The usable capacity of the multiplex or ensemble is a maximum of 1.5Mbps, and an average of 1152kbps. Given that audio programming employs different coding speeds and degrees of protection, the occupancy of the multiplex is computed by capacity units, of which there are a total of 864.
For example, with an average speed of 64kbps and an average level of protection, roughly 15 audio channels fit into a single multiplex. This is in fact the greatest advantage of digital broadcasting; space for a higher number of channels, but given the broad array of services that it offers, DAB is much more than digitized audio programming.
