Synchronization algorithms for UWB signals
Synchronization algorithms for UWB signals
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DOI：
10.1109/tcomm.2005.863728
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发表时间：
2006-02
影响因子：
8.3
通讯作者：
C. Carbonelli;U. Mengali
中科院分区：
文献类型：
--
作者：
C. Carbonelli;U. Mengali
本文研究了在密集多径环境下超宽带通信系统的定时恢复问题。提出了两种定时算法，利用接收信号的样本来估计相对于接收器的时钟（帧定时）的各个帧的开始和每个符号中的第一帧的位置（符号定时）。信道估计作为副产品出现，并且可以用于相干匹配滤波器检测。所提出的算法需要的脉冲持续时间的倒数的顺序上的采样率。通过模拟相干和差分检测器的操作来评估它们的性能。它们的采样率的敏感性进行了讨论，和多址干扰的影响进行了评估。
This paper is concerned with timing recovery for ultra-wideband communication systems operating in a dense multipath environment. Two timing algorithms are proposed that exploit the samples of the received signal to estimate the start of the individual frames with respect to the receiver's clock (frame timing) and the location of the first frame in each symbol (symbol timing). Channel estimation comes out as a by-product and can be used for coherent matched filter detection. The proposed algorithms require sampling rates on the order of the inverse of the pulse duration. Their performance is assessed by simulating the operation of coherent and differential detectors. Their sensitivity to the sampling rate is discussed, and the effects of the multiple access interference are evaluated.