欢迎访问《兵工学报》官方网站,今天是

兵工学报 ›› 2006, Vol. 27 ›› Issue (1): 37-40.

• 论文 • 上一篇    下一篇

突发多相移相键控通信中应用离散傅立叶变换内插技术联合估计载波参数

王宁,安建平,王君   

  1. 北京理工大学电子工程系,北京100081
  • 收稿日期:2005-04-26 上线日期:2014-12-25
  • 通讯作者: 王宁

A Simple Interpolation Technique for the DFT for Joint System Parameters Estimation in Burst MPSK Transmissions

WANG Ning, AN Jian-ping, WANG Jun   

  1. Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2005-04-26 Online:2014-12-25
  • Contact: WANG Ning

摘要: 在突发数字通信中,通常采用相干检测,为解决参考载波的同步这一关键问题,给出了一种多相移相键控( MPSK)信号,利用离散傅立叶变换(DFT)内插技术,在较大频偏范围内联合估计载波频率和相位的算法。这种算法不需要增加DFT数据长度,适合突发工作方式。以正交移相键控( QPSK)信号为例,讨论了这种算法的理论推导和性能,并给出了计算机仿真的结果。

关键词: 通信技术 , 载波同步 , 离散傅立叶变换 , 内插技术 , 克拉美罗界 , 多相移相键控

Abstract: In burst-mode digital transmission, carrier synchronization is a key technique in the coher?ent- demodulation of multiphase-shift key (MPSK) signals and is directly related to the specification to demodulation. The algorithm of estimating carrier frequency and phase was proposed by a simple fre?quency domain interpolation technique for discrete Fourier transform. The algorithm can significantly improve the frequency and phase resolution capabilities of the DFT without increasing its data size. The principle and performance of the algorithm was analyzed and the result of the simulation was giv?en.

Key words: communication technique , carrier synchronization , DFT , interpolation , CRB , MPSK

中图分类号: