Optics-Radio Hybrid Single Frequency Network for Digital Television Terrestrial Broadcasting

The visible light communication (VLC) system works well for indoor scenarios if the indoor coverage performance of the existing digital television terrestrial broadcasting (DTTB) system is not satisfactory. In this paper, we propose a hybrid system called the optics-radio hybrid single frequency network (SFN) with wide and deep coverage for DTTB, realizing seamless connection between outdoor and indoor. The hybrid system maintains the consistency of the baseband signal as well as the existing SFN structure of DTTB, and the hybrid receiver with antenna and photodiode can receive radio or optical signal individually or simultaneously. Furthermore, other functions of DTTB like positioning can also be improved.

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