基于判决反馈环路的QPSK信号载波跟踪技术的研究  

Decision Feedback Loop QPSK Signal Carrier Tracking Technology

作　　者：镡欣[1] 亓云鹏 

机构地区：[1]黑龙江大学信息与计算中心,哈尔滨150080 [2]黑龙江大学建筑工程学院,哈尔滨150080

出　　处：《黑龙江水专学报》2007年第1期108-110,共3页Journal of Heilongjiang Hydraulic Engineering College

摘　　要：现代通信系统中,载波跟踪又称载波同步,是数字通信系统中一个必不可少的单元,是全数字接收机中的一个关键技术,它补偿了信号在传输和调制过程中所造成的频率偏移和相位偏移,是半个世纪以来一直被研究的课题。主要研究利用判决反馈环实现QPSK信号的载波跟踪,给出了整个系统的总体设计和各个模块的功能以及在QUARTUSII上的实现细节。并进行了功能仿真和时序仿真,给出了仿真结果。In the modem communications system, the carrier tracking called the carrier synchronization which is an essential unit in the digital communication system , is essential technology in entire digital receiver. It compensates the signal the frequency deviation and the phase deviation which creates in the transmission and the modulation process. The topic is studied in past half century continuously . This article mainly researches and realizes the QPSK signal carrier tracking using the decision feedback loop, produces the overall system design and each module function as well as realization detail on the QUARTUSII, carries on the function simulation and the succession simulation, and produces the simulation result.

关 键 词：载波跟踪 判决反馈环 QPSK 

分 类 号：TN914.3[电子电信—通信与信息系统]