一种用于实现载波同步的改进COSTAS环研究  

An Improved COSTAS Loop for Implementation of Carrier Synchronization

作　　者：刘志[1] 吴利民[2] 邹晓清[1] 衣向举[1] 

机构地区：[1]空军雷达学院研究生管理大队,武汉430019 [2]空军雷达学院信息与指挥自动化系,武汉430019

出　　处：《空军雷达学院学报》2007年第2期132-134,共3页Journal of Air Force Radar Academy

摘　　要：为了提高软件无线电载波恢复系统的运算效率、简化其电路实现结构,提出了一种改进COSTAS环,并以QPSK信号为例从理论上对该环作了相应介绍,并对其改进算法进行了分析.最后通过System View软件得出仿真结果,验证了该算法的可行性与正确性.仿真结果表明,该环在能够实现提取出同步载波分量的前提下,具有实现电路简单,误码率较低等优点。An improved COSTAS loop was presented for enhancing the Operating efficiency of the carrier recovery system in the SDR and simplifying its implementation. Its operating principle was expounded by taking an example of QPSK signal, and the improved algorithm analysed. Finally the feasibility of the algorithm was validated by simulation via System View software, and the results show that the improved loop is of simpler implementation, lower error rate and etc, in the precondition of extracting the synchronous carrier component.

关 键 词：COSTAS环 载波同步 QPSK信号 

分 类 号：TN763[电子电信—电路与系统] TP39[自动化与计算机技术—计算机应用技术]