单通道邻频数字调制混合信号的载波初相估计

杨勇; 郭一鸣; 王海昕; 彭华; 张冬玲

doi:10.11959/j.issn.1000-436x.2016205

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单通道邻频数字调制混合信号的载波初相估计

学术论文 | 更新时间：2024-06-05

- 单通道邻频数字调制混合信号的载波初相估计
- Carrier initial phases estimation for single-channel adjacent-frequency mixture of digitally modulated signals
- 通信学报 2016年37卷第10期页码：141-148
- 作者机构：
  
  1. 解放军信息工程大学信息系统工程学院，河南郑州 450002
  2. 西南电子电信技术研究所，四川成都 610041
- 作者简介：
  
  [ "杨勇（1988-），男，云南大理人，解放军信息工程大学博士生，主要研究方向为盲信号处理、信道编译码技术等。" ]
  [ "郭一鸣（1990-），男，河北邢台人，解放军信息工程大学博士生，主要研究方向为单通道盲信号分离技术等。" ]
  [ "王海昕（1977-），男，江西南昌人，西南电子电信技术研究所高级工程师，主要研究方向为信号信息处理系统总体设计等。" ]
  [ "彭华（1973-），男，江西萍乡人，解放军信息工程大学教授、博士生导师，主要研究方向为软件无线电、通信信号处理等。" ]
  [ "张冬玲（1976-），女，江苏盐城人，解放军信息工程大学副教授，主要研究方向为盲信号处理、信道编译码技术等。" ]
- 基金信息：
  
  国家自然科学基金资助项目(61401511)
- DOI：10.11959/j.issn.1000-436x.2016205
  中图分类号： TN911.7
- 网络出版日期：2016-10，
  
  纸质出版日期：2016-10-25
- 稿件说明：
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杨勇, 郭一鸣, 王海昕, 等. 单通道邻频数字调制混合信号的载波初相估计[J]. 通信学报, 2016,37(10):141-148.

Yong YANG, Yi-ming GUO, Hai-xin WANG, et al. Carrier initial phases estimation for single-channel adjacent-frequency mixture of digitally modulated signals[J]. Journal on communications, 2016, 37(10): 141-148.
杨勇, 郭一鸣, 王海昕, 等. 单通道邻频数字调制混合信号的载波初相估计[J]. 通信学报, 2016,37(10):141-148. DOI： 10.11959/j.issn.1000-436x.2016205.

Yong YANG, Yi-ming GUO, Hai-xin WANG, et al. Carrier initial phases estimation for single-channel adjacent-frequency mixture of digitally modulated signals[J]. Journal on communications, 2016, 37(10): 141-148. DOI： 10.11959/j.issn.1000-436x.2016205.

摘要

在非合作卫星通信中，针对具有固定帧长和固定帧同步序列的单通道混合信号，根据源信号间的参数差异给出一种同时适用于低阶和高阶混合信号的载波初相估计算法。算法先对去频偏后的帧同步数据以帧长为间隔进行累加，进而根据功率最大化准则对累加结果做定时同步，从而实现对初相信息的提取。为便于比较，同时推导了单通道混合信号载波初相估计的修正克拉美罗界（MCRB

modified Cramer-Rao bound）。仿真结果表明，随着累加帧数的增加，初相估计性能逐渐接近MCRB。

Abstract

For single-channel mixture of adjacent-frequency digitally modulated signals which have the fixed frame length and sync codes in non-cooperative satellite communications

a carrier initial phases estimation algorithm which can be applied to both low-order and high-order digitally modulated mixtures was provided according to the differences of parameters in the source signals.The sync data eliminated the frequency offset was added in the interval of frame length firstly

then timing synchronization was accomplished for the added result in terms of power maximization rule

thus the initial phases information was derived.Moreover

the modified Cramer-Rao bound (MCRB) of carrier initial phases for single-channel mixture of adjacent-frequency digitally modulated signals was derived for comparison.Simulation results show that

difference between estimation performance of the proposed algorithm and MCRB becomes smaller with the increase in the number of added frames.

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