Digital Terrestrial TV Broadcasting System with Enhanced Robustness

LI Chu-xiang; WANG Zhang-lei; LU Jian-hua

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Digital Terrestrial TV Broadcasting System with Enhanced Robustness

更新时间：2025-07-16

- Digital Terrestrial TV Broadcasting System with Enhanced Robustness
- Acta Electronica Sinica Vol. 29, Issue S1, Pages: 1812-1815(2001)
- 作者机构：
  
  清华大学电子工程系, 微波与数字通信国家重点实验室,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919
- Published：2001
- 稿件说明：
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LI Chu-xiang, WANG Zhang-lei, LU Jian-hua. Digital Terrestrial TV Broadcasting System with Enhanced Robustness[J]. Acta Electronica Sinica, 2001, 29(S1): 1812-1815.
DOI：

LI Chu-xiang, WANG Zhang-lei, LU Jian-hua. Digital Terrestrial TV Broadcasting System with Enhanced Robustness[J]. Acta Electronica Sinica, 2001, 29(S1): 1812-1815. DOI：

摘要

本文提出了一套针对MPEG-2视频压缩数据传输的自适应容错机制

用于支持地面数字电视广播系统中的可靠电视传输.具体地

本文首先提出了一种基于时域隐藏和块匹配的差错隐藏算法

在保持较好隐藏效果的同时

通过有效地减小搜索窗口而显著降低了算法复杂度.同时

针对独立I帧图像还提出了独特的差错隐藏方法.将这两种差错隐藏算法与低运算复杂度的空域/时域运动检测方法相结合

又衍生出一种自适应空/时域结合差错隐藏算法.仿真结果表明

本文提出的算法即使在很高的数据差错率情况下

仍然可以实现地面数字电视广播系统中可靠而高效的视频传输.

Abstract

In this paper

an error concealment scheme is developed to enhance the robustness of digital terrestrial TV broad-casting(DTTB).This scheme includes a low complexity error concealment algorithm

an effective reception for isolated I-pictures

and an efficient detection of spatial/temporal activity.Specifically

the error concealment algorithm combines temporal motion compensation with block matching methodology to achieve effective concealment while keeping low complexity with small size of search-window for block matching.Extensive simulations have verified that

even with high packet error rate

the proposed scheme may achieve efficient and robust video broadcasting over DTTB systems.

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