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ATSC 3.0 return channel analysed

To support emerging interactive services it is generally agreed that the inclusion of an optional, in-band dedicated return channel or DRC should be implemented in the next-generation terrestrial broadcast system, ATSC 3.0.

Researchers at the Shanghai National Engineering Research Center of Digital Television (NERC) are presenting a paper in The Future Zone which introduces the design of DRC as well as several implementation concerns.

The NERC was established in 2010 to strengthen the technological progress and restructuring of China’s television industry.

The network architecture, link budget and radiation feature of DRC are described in detail in the paper.

The requirements and detailed design of DRC are presented and the performance of DRC is evaluated. Comparisons with typical techniques are carried out in terms of bit error rate, access probability, resource utilisation and so on. Furthermore, the co-operation between downlink broadcast and DRC is analysed.