下一代地面数字电视广播系统关键技术

摘要

较全面地介绍了下一代中国地面数字电视广播系统的关键技术,其中包括改进的帧结构、发射分集、先进的信道编码和调制、多业务支持、广播回传信道和时频域定位等.仿真结果表明这些技术的应用使系统性能良好.%In this paper, the key techniques of Chinese next generation digital television terrestrial multimedia broadcasting system are introduced, including the improved frame structure, transmit diversity, advanced channel coding and modulation, multi-service supporting, broadcasting feedback channel and time-frequency location and so on. The simulating results show that by using these techniques, the system has good performance.