摘要
为了实现突发16APSK信号载波同步,介绍了信号模型,给出了开环载波同步算法,分析了开环载波频偏估计和载波初始相位估计,介绍了闭环载波同步算法,重点介绍了载波相位误差提取和闭环载波跟踪。通过载波同步仿真分析了开环频偏和初始相位估计及闭环开环联合算法的性能,验证了其适用于突发16APSK载波同步。
This paper presents an algorithm for burst 16APSk＇s carrier synchronization.The signal mode is introduced first,and then the carrier synchronization algorithm based on open loop is introduced.The carrier offset estimation and the initial phase estimation based on open loop is analyzed,and the carrier synchronization based on closed loop is introduced,emphasizing on carrier phase error estimation and carrier tracking based on closed loop.At last,the performance of the algorithm based on open and closed loop is analyzed through carrier synchronization simulation,and it is proved that this algorithm is applicable for burst 16-APSK＇s carrier synchronization.
出处
《无线电工程》
2012年第5期61-64,共4页
Radio Engineering
