Study Analysis of Transmission Efficiency in DAB+ Broadcasting System
DAB+ is a very innovative and universal multimedia broadcasting system. Thanks to its updated multimedia technologies and metadata options, digital radio keeps pace with changing consumer expectations and the impact of media convergence. Broadcasting analog and digital radio services does vary, concerning devices on both transmitting and receiving side, as well as content processing mechanisms. However, the biggest difference is the way of managing content from numerous service providers. The main difference between forming the analog and digital radio signal is the fact, that in case of digital DAB+ transmission signals from all service providers need to be grouped in the so-called ensemble before entering the transmitter. Of course, the number of content providers, as well as assigned bitrate, is limited by the regulator. In this work a new adaptive bitrate assignment and resource allocation method has been described. This allocation depends on various characteristics and quality requirements assigned to different radio programs, which depend on the type of provided services, in particular transmitting content in the form of audio and speech signals. In order to verify the proposed method, a simulator has been developed, as well as a demonstrator consisting of a transmitting and receiving side.
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