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广播技术的数字化为地面电视广播提供了新的组网方式——单频网(SFN)。相对于传统的多频网(MFN),单频网具备诸多优势,例如提高地面电视广播的频谱利用率,便于通过补点扩大覆盖范围,提高覆盖质量,提高系统的功率效率,利于跨区移动接收等新业务的开展等等。凭借这些优势,在地面数字电视广播网建设中单频网得到了各个国家和地区的青睐。然而目前单频网技术在国内的应用
The digitalization of broadcasting technology provides a new way of networking for terrestrial television broadcasting - single frequency network (SFN). Compared with the traditional multi-frequency network (MFN), the single-frequency network has many advantages such as improving the spectrum utilization rate of the terrestrial television broadcasting, widening the coverage area by the complement point, improving the coverage quality, improving the power efficiency of the system and facilitating the trans-area mobile Receive new business development and so on. With these advantages, the single frequency network has been favored by various countries and regions in the construction of terrestrial digital television broadcasting network. However, the current single-frequency network technology in the country