计算机工程 ›› 2011, Vol. 37 ›› Issue (21): 77-79.doi: 10.3969/j.issn.1000-3428.2011.21.026

• 网络与通信 • 上一篇    下一篇

一种CPM信号检测与定时同步算法

钟 凯,葛临东,巩克现   

  1. (解放军信息工程大学信息工程学院,郑州 450002)
  • 收稿日期:2011-04-19 出版日期:2011-11-05 发布日期:2011-11-05
  • 作者简介:钟 凯(1987-),男,硕士,主研方向:通信信号处理,软件无线电;葛临东,教授;巩克现,副教授
  • 基金项目:
    河南省基础与前沿研究基金资助项目(082300413205)

CPM Signal Detection and Timing Synchronization Algorithm

ZHONG Kai, GE Lin-dong, GONG Ke-xian   

  1. (Institute of Information Engineering, PLA Information Engineering University, Zhengzhou 450002, China)
  • Received:2011-04-19 Online:2011-11-05 Published:2011-11-05

摘要: 针对传统连续相位调制(CPM)接收机检测复杂度高和定时同步困难的问题,提出一种CPM信号联合检测与定时同步算法。基于低维Walsh信号空间分解CPM信号,在低通滤波器中采用子区间采样器代替大量匹配滤波器,利用面向判决的方式进行定时同步。仿真实验表明,该算法的复杂度较低,适用于多数CPM调制方案。

关键词: 连续相位调制, 序列检测, 定时同步, Walsh信号空间, 修正克拉美罗界

Abstract: Aiming at the problem of high detection complexity and timing synchronization difficulty in Continuous Phase Modulation(CPM), this paper proposes a reduced-complexity detection and timing synchronization algorithm. It is based on a decomposition in the Walsh signal space. The receiver is just the ordinary linear filter followed by a subinterval sampler instead of the matched filters, and the synchronization is direct decision. Simulation results show that this algorithm exhibits excellent performance and may be employed with most CPM scheme.

Key words: Continuous Phase Modulation(CPM), sequence detection, timing synchronization, Walsh signal space, Modified Cramer-Rao Bound(MCRB)

中图分类号: