摘要
对利用Farrow内插滤波、Gardner算法、Ted定时误差算法实现的位同步技术进行研究与仿真分析。该方法可用于实现全数字的接收机,其结构包括定时误差检测、插值滤波器、环路滤波器和插值控制电路等。在无人机数据链常用的pi/4-QPSK调制的仿真系统中,通过仿真可以得出利用该方法实现的位同步技术具有良好的性能,可以满足无人机图像传输数据链路的要求。
In this paper,we research,simulate and analyze the bit synchronization technology which is implemented by using Farrow interpolation filter and Gardner Algorithm and Ted timing error-algorithm.The method can be used to full-digital receiver,and its structure composition includes timing error detector,interpolation filter,loop filter,interpolation controller circuit,etc.In the simulation system design of pi/4-QPSK modulation used by UAV data links,the simulation results show that the bit synchronization technology by this method has better performance and can meet the requirements of UAV image data link system.
出处
《无线电工程》
2010年第2期13-15,共3页
Radio Engineering
