一种新的基于软件无线电的QAM调制信号的同步算法  

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

作　　者：曾长华[1] 杨震[2] 郑清[1] 

机构地区：[1]南京邮电大学信息工程系,南京210003 [2]南京邮电大学院办,南京210003

出　　处：《电讯技术》2006年第4期45-49,共5页Telecommunication Engineering

基　　金：国家高技术研究发展计划(863计划)项目(2002AA121068)

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。In a software defined radio （SDB） 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 carder coefficient is adopted so that this algorithm can be implemented in real time. Theoretical analysis and simulation show that the algorithm does work well.

关 键 词：数字通信系统 同步 QAM调制 软件无线电 

分 类 号：TN763[电子电信—电路与系统]