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| 保护带叠加最佳训练序列时间同步方法 | |
| 引用本文： | 罗仁泽,高頔,伍裕江,毛勇,邓春健.保护带叠加最佳训练序列时间同步方法[J].电子学报,2009,37(7):1584-1587. |
| 作者姓名： | 罗仁泽 高頔 伍裕江 毛勇 邓春健 |
| 作者单位： | 1. 电子科技大学中山学院,广东中山,528402 2. 重庆邮电大学通信学院,重庆,400065 3. 广东省通宇通讯设备有限公司,广东中山,528437 |
| 基金项目： | 粤港关键领域重点突破项目(No.2007A090602002) |
| 摘 要： | 已成为众多高速无线传输标准的OFDM系统常采用导频插入(PTAM)获得时间同步,然而,浪费了带宽效率.为了改善带宽效率,本文提出在保护带时域叠加弱能量最佳训练序列实现时间同步方法,最佳训练序列的能量分配比例由影响系统BER性能最小而确定.仿真表明:对于低信噪比,在保护带内叠加弱能量序列同步性能与PTAM同步性能相当,且对系统性能影响可以忽略,该法提高了带宽效率. |
| 关 键 词： | DVB-T系统 帧同步 叠加训练序列 保护带 |
| 收稿时间： | 2008-09-08 |
Timing Synchronization Scheme Using Superimposed Perfect Training in Guard Band |
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| LUO Ren-ze,GAO Di,WU Yuj-iang,MAO Yong,DENG Chun-jian.Timing Synchronization Scheme Using Superimposed Perfect Training in Guard Band[J].Acta Electronica Sinica,2009,37(7):1584-1587. | |
| Authors: | LUO Ren-ze GAO Di WU Yuj-iang MAO Yong DENG Chun-jian |
| Institution: | 1. Zhongshan Institute,University of Electronic Science and Technology of China(UESTC),Zhongshan,Guangdong 528402,China;2. Communication Engineering Institute,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;3. Tongyu Communication Equipment Limited Company,Zhongshan,Guangdong 528437,China |
| Abstract: | Orthognal Frequency Divison Multiplexing(OFDM) has been adopted by many high speed transmission standards.Pilot tone assisted modulation(PTAM) is well known technique to achieve timing synchronization information in OFDM but is not bandwidth efficient.To achieve high bandwidth efficiency,we proposed to carry out sperimposed a transparent genralized chirp-like(GCL) training with lower power in the guard band onto the time domain to improve the timing synchronization quality.The power ratio of the GCL sequenc... |
| Keywords: | bandwidth effieciency frame synchronization superimposed training guard band |
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