Symbol Timing Rapid Acquisition and Tracking for π/4  DQPSK Signals

Zhao Hangsheng; Gan Zhongmin; Qu Dexin

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Symbol Timing Rapid Acquisition and Tracking for π/4 DQPSK Signals

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- Symbol Timing Rapid Acquisition and Tracking for π/4 DQPSK Signals
- Acta Electronica Sinica Issue 4, (1999)
- 作者机构：
  
  南京通信工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN927.2
- Published：1999
- 稿件说明：
移动端阅览
[1]赵杭生,甘仲民,屈德新.π/4-DQPSK调制的快速位同步捕获和位同步跟踪[J].电子学报,1999(04):25-28+39.

Zhao Hangsheng, Gan Zhongmin, Qu Dexin. Symbol Timing Rapid Acquisition and Tracking for π/4 DQPSK Signals[J]. Acta Electronica Sinica, 1999, (4).
[1]赵杭生,甘仲民,屈德新.π/4-DQPSK调制的快速位同步捕获和位同步跟踪[J].电子学报,1999(04):25-28+39. DOI：

Zhao Hangsheng, Gan Zhongmin, Qu Dexin. Symbol Timing Rapid Acquisition and Tracking for π/4 DQPSK Signals[J]. Acta Electronica Sinica, 1999, (4). DOI：

摘要

低速率数字移动突发通信中，存在着较大的多普勒频移．本文根据π／４ＤＱＰＳＫ本身的特点，提出了一种与信号能量检测、频移初捕并行处理的位定时捕获算法，与先信号能量检测，再估计多普勒频移，然后进行位定时捕获的串行处理相比，有较明显的优越性，同时本文还给出了一种很简捷的位定时跟踪算法，并对此作了计算机仿真．

Abstract

This paper presents a new algorithm of symbol timing rapid acquisition for π/4 DQPSK with Doppler frequency offset in low rate digital mobile burst signal.This algorithm can be done in parallel with signal acquisition and frequency offset acquisition.It has advantages over serial systems.That detect signal energy

then estimate Doppler frequency offset

and finely acquire symbol timing.A very simple symbol timing tracking algorithm is also presented in the paper.Finally

the results of computer simulations are given.

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