| 一种新的极低SNR下帧同步机制研究 |
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| 引用本文： | 易智,周亮,刘德伟.一种新的极低SNR下帧同步机制研究[J].通信技术,2009,42(12):204-206. |
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| 作者姓名： | 易智 周亮 刘德伟 |
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| 作者单位： | 电子科技大学,通信抗干扰技术国家级霞点实验室,四川,成都,610054 |
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| 摘 要： | 研究在突发通信系统中的帧同步信号检测方法和一种新的帧同步机制。针对常规的长帧同步序列相关特性不佳的问题,借鉴巴克码的思想,提出了一种分别采用周期相关和非周期相关的二次同步方案,从而实现在极低信噪比（-10dB）下的同步。新的帧同步序列相关特性明显好于传统的一次同步序列的特性。在突发通信系统中,采用此方案序列作为帧同步序列,其可靠性更高,帧同步建立时间较短,性能优异。
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| 关 键 词： | 突发通信 帧同步 巴克码 同步序列 相关特性 |
A New Frame Synchronization Scheme in Very Low SNR Environments |
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| YI Zhi,ZHOU Liang,LIU De-wei.A New Frame Synchronization Scheme in Very Low SNR Environments[J].Communications Technology,2009,42(12):204-206. |
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| Authors: | YI Zhi ZHOU Liang LIU De-wei |
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| Affiliation: | (State Eey Laboratory of Communication, University of Electronic Science and Technology of China, Chengdu Sichuan 610054, China) |
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| Abstract: | This paper burst communication system. based on the coding idea o presents a new frame synchronization scheme and the signal detection method for the Because the correlation property of conventional frame synchronization is non-ideal, f Barker code, a double synchronization scheme is proposed with the periodic and non-periodic correlation respectively. And this scheme is suitable for very low SNR （-10dB） situation. The correlation property of this new frame synchronization sequence is obviously better than the old one. In the burst communication system, this design of new frame synchronization gives high reliability and shorter frame synchronization setup time. |
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| Keywords: | burst communication frame synchronization Barker code synchronization sequence correlation property |
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