数字通信系统中导频同步信号处理技术研究

Study on Synchronization Mechanism in Digital Communication System Based on Pilot Channel

在数字通信系统中,各种干扰因素都能导致发送和接收信号之间产生同步偏差。通过对这种系统存在的信号同步偏差进行频域模型分析,提出了一种基于导频信号与数据信号之间的相角差的计算、对数据信号进行自适应同步调整的算法机制。实验证明,该种算法机制能有效地抑制和校正信号发送和接收之间的同步偏差,可充分保证数字通信系统的功能实现和通信性能。

In digital modulation communication system, the phase error between the signals of transmitter and receiver is unavoidable. After an analysis of the model for the phase errors in frequency domain, a synchronization mechanism based on the computation of the phase errors in the signals of data channel and pilot channel is provided. Simulation and exneriment prove that the mechanism is effective.