| 新颖的Chirp通信系统同步方法 |
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| 引用本文： | 刘皓.新颖的Chirp通信系统同步方法[J].电子科技大学学报(社会科学版),2009(6). |
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| 作者姓名： | 刘皓 |
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| 作者单位： | 电子科技大学通信抗干扰技术国家级重点实验室; |
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| 摘 要： | 提出的同步方法把Chirp信号扫频频率范围和扫频时间都扩展了一倍的本地信号与接收信号相乘,并利用乘积信号中主要频率分量的强度来构成反馈环路,再通过该反馈环路来对输入信号的延迟进行跟踪和锁定。分析和仿真结果表明,该方法可以完成系统的时间同步任务。该方法的核心在于把本地参考信号的扫频频率范围和扫频时间进行了扩展,从而排除了常用方法在宽带、超宽带情况下受信道影响的问题,同时由于避免了使用滑动相关器,也因此降低了复杂度。
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| 关 键 词： | Chirp 相关检测 个域网(PAN) 同步技术 超宽带 |
Novel Synchronization Method for Chirp Communication System |
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| LIU Hao.Novel Synchronization Method for Chirp Communication System[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2009(6). |
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| Authors: | LIU Hao |
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| Institution: | LIU Hao(National Key Laboratory of Communication,University of Electronic Science , Technology of China Chengdu 610054) |
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| Abstract: | A new synchronous method is suggested to mitigate the negative impact of channel in ultra-wide band system.The new method uses a local reference signal whose sweeping frequency and time are expanded multiply with the input signal,and then the strength of the strongest part of the product is used in a feedback loop to capture and track the timing of input signal.The method has low complexity and eliminates the influence of channel. |
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| Keywords: | Chirp correlation detectors PAN synchronization ultra wide band(UWB) |
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