| 基于卫星分发链路的地面数字电视单频网关键技术及其应用 |
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| 引用本文： | 张超,李锦文,高鹏,潘长勇,李薰春,戚武,杨昉.基于卫星分发链路的地面数字电视单频网关键技术及其应用[J].电视技术,2015,39(16):87-91. |
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| 作者姓名： | 张超 李锦文 高鹏 潘长勇 李薰春 戚武 杨昉 |
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| 基金项目： | 受质检公益性行业科研专项经费资助项目；科技部科技伙伴计划资助 |
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| 摘 要： | 本文提出了基于卫星分发链路的地面数字电视单频网的组网方案。该方案利用了卫星链路的转发优势，节目分发链路不受地域差异化条件的限制，不需要单独架设专用有线分发网络，转发延时分布均匀，特别适合于在复杂环境下构建大范围的单频网。本文详细阐述了基于卫星分发链路的地面数字电视单频网的网络结构、特点与关键技术。实验室测试和开路测试结果均表明该方案的可行性和有效性。
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| 关 键 词： | 地面数字电视，单频网，卫星链路 |
| 收稿时间： | 2015/7/14 0:00:00 |
| 修稿时间： | 2015/7/21 0:00:00 |
SFN Structure Based on Satellite Distribution links for Digital Terrestrial Television Broadcasting Systems |
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| Abstract: | In this paper, a novel SFN structure based on satellite distribution networks is proposed. The satellite link will not be restricted by different geographical conditions without dedicated wired distribution networks. The transmission delay of the satellite link is distributed uniformly for different locations which can greatly simplify the network planning. Therefore, it is suitable for constructing national wide or large area DTTB SFN under complicated environments. Laboratory tests and field trials indicate that the proposed scheme can support practical DTTB applications. |
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| Keywords: | Digital terrestrial television broadcasting single frequency network (SFN) satellite distribution link |
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