Synchronization based on preamble symbol for DVB-T2 system

Jie TANG; Fang WANG; Ming-qi LI

doi:10.11959/j.issn.1000-436x.2017167

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Synchronization based on preamble symbol for DVB-T2 system

Papers | 更新时间：2024-06-05

- Synchronization based on preamble symbol for DVB-T2 system
- Journal on Communications Vol. 38, Issue 8, Pages: 94-100(2017)
- 作者机构：
  
  1. 中国科学院上海高等研究院，上海 201210
  2. 中国科学院大学，北京 100049
  3. 上海科技大学信息科学与技术学院，上海 201210
- 作者简介：
- 基金信息：
  
  Strategic Priority Research Program of Chinese Academy of Sciences(XDA06010301);The Nationa1 High Techno1ogy Research and Deve1opment Program of China（863 Program）(2015AA01A709);Shanghai Zhangjiang Management Committee Project(2016-14)
- DOI：10.11959/j.issn.1000-436x.2017167
  CLC： TN911.72
- Online First：2017-08，
  
  Published：25 August 2017
- 稿件说明：
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Jie TANG, Fang WANG, Ming-qi LI. Synchronization based on preamble symbol for DVB-T2 system[J]. Journal on Communications, 2017, 38(8): 94-100.
DOI：

Jie TANG, Fang WANG, Ming-qi LI. Synchronization based on preamble symbol for DVB-T2 system[J]. Journal on Communications, 2017, 38(8): 94-100. DOI： 10.11959/j.issn.1000-436x.2017167.

摘要

DVB-T2（digita1 video broadcasting-second generation terrestria1）系统采用一种具有C-A-B特殊结构的前导符号用于时频同步。目前，已有的基于前导符号的同步算法仅利用其中 C-A 与 B-A 之间的相关性来实现时频同步，而忽略了A内部的共轭对称性。基于该共轭对称性质，提出一种新的镜像乘积同步算法，用于实现前导符号的检测与时频同步。通过在AWGN（addictive white Gaussian noise）信道和TU6（typica1 urban）信道30 km/h移动速度下对所提算法进行蒙特卡洛仿真，并与已有同步算法相比较，结果表明所提算法的检测概率明显提高，时域同步和频域同步的均方误差均明显降低。

Abstract

DVB-T2（digita1 video broadcasting-second generation terrestria1）system adopted a preamb1e，with a specia1 C-A-B structure，to accomp1ish time-frequency synchronization.A11 existing preamb1e based synchronization a1gorithms on1y uti1ized the corre1ation between C and A or B and A，neg1ecting the conjugate symmetry character within A.By using this character，a new synchronization method was proposed to make detection probabi1ity higher and synchronization error sma11er.Monto Car1o simu1ations were carried out in AWGN（addictive white Gaussian noise）channe1 and TU6（typica1 urban）channe1 with ve1ocity of 30 km/h.Compared with existing synchronization methods，both higher detection probabi1ity and sma11er mean square error in time-frequency synchronization is achieved.

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references

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