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引用本文：

林华杰,史浩山.一种全数字位同步检测算法[J].电讯技术，2004，44（3）：75 - 77. [点击复制]
.An All Digital Bit Synchronization Detect Algorithm[J].，2004，44（3）：75 - 77. [点击复制]

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一种全数字位同步检测算法

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摘要:

位同步检测是实现全数字接收机开环定时恢复的关键技术。本文推导了基带PAM(脉冲幅度调制)信号的互相关函数，指出基带PAM信号的互相关函数中含有位同步信息，以此为依据得到了一种位同步检测算法。该算法可采用递归结构实现，且与载波相位误差无关。

关键词: 全数字接收机软件无线电位同步基带PAM信号互相关函数算法

DOI：10.3969/j.issn.1001-893X.

基金项目:

An All Digital Bit Synchronization Detect Algorithm

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Abstract:

The bit synchronization detect is very important in opened loop timing recovery of all digital receivers. This paper derives the cross correlation function of baseband PAM (Pulse Amplitude Modulation) signal, and shows that the cross correlation function includes timing information. Then a bit synchronization detect algorithm is given, which can be realized by a recursion structure, and is independent to carrier phase error.

Key words: All digital receiver,Software radio,Bit synchronization,Baseband PAM signal,Cross correlation function,Algorithm