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引用本文：

曾长华,杨震,郑清.一种新的基于软件无线电的QAM调制信号的同步算法[J].电讯技术，2006，46（4）：45 - 49. [点击复制]
.A New Synchronization Algorithm Based on Software Defined Radio(SDR) in QAM Modulated Systems[J].，2006，46（4）：45 - 49. [点击复制]

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一种新的基于软件无线电的QAM调制信号的同步算法

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摘要:

在软件无线电数字通信系统中，为了基于纯软件来实现收发同步，提出了一种新的基于软件无线电的QAM调制信号的同步算法。该算法采用载波相位补偿频率偏移的思想，利用软件编程实现。另外，在DSP实现中还引用了载波系数表和帧缓存的思想，这样有助于实时性的实现。理论分析及仿真试验表明，该算法具有实用性。

关键词: 数字通信系统同步 QAM调制软件无线电

DOI：10.3969/j.issn.1001-893X.

投稿时间：2005-06-11修订日期：2005-10-29

基金项目:国家科技攻关项目

A New Synchronization Algorithm Based on Software Defined Radio(SDR) in QAM Modulated Systems

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Abstract:

In a software defined radio(SDR) communication system,a new synchronization algorithm based on SDR in QAM modulated system is presented to realize synchronization based on pure software.This algorithm is based on the carrier phase compensating the bias of the carrier frequency and is implemented by programming.And the idea of the frame buffer and the list of carrier coefficient is adopted so that this algorithm can be implemented in real time.Theoretical analysis and simulation show that the algorithm does work well.

Key words: digital commumication system,synchronization,QAM,software defined radio(SDR)