Genetic Algorithm Based Optimization Method of Single Frequency Network Planning for DTMB In this paper, an approach to optimization of the single frequency network (SFN) for Digital Television Terrestrial Multimedia Broadcasting (DTMB) is proposed, aiming to resolve the issue that the design and construction of SFN is complex and timeconsuming. The approach can be used to balance the performance and cost of an overlay network, and adopt the genetic algorithm to jointly optimize the delays of all transmission stations within it, then eventually create multiple SFN solutions that are optional to address the requirements on specific covered area and population located in a given region, thus considerably improving the efficiencies of SFN design and construction. The results of our tests indicate that the outcomes of SFN coverage optimization were measurably improved with the genetic algorithm for delay optimization of the transmission stations.

OpticsRadio 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 opticsradio 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.