Performance Analysis of UQPSK Carrier Acquisition and Tracking Algorithm in Satellite Communications

WANG Nuo; DAI Yi-min

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Performance Analysis of UQPSK Carrier Acquisition and Tracking Algorithm in Satellite Communications

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- Performance Analysis of UQPSK Carrier Acquisition and Tracking Algorithm in Satellite Communications
- Acta Electronica Sinica Vol. 32, Issue 7, Pages: 1219-1222(2004)
- 作者机构：
  
  中国科学技术大学电子工程与信息科学系,安徽,合肥,230026
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.53
- Published：2004
- 稿件说明：
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WANG Nuo, DAI Yi-min. Performance Analysis of UQPSK Carrier Acquisition and Tracking Algorithm in Satellite Communications[J]. Acta Electronica Sinica, 2004, 32(7): 1219-1222.
DOI：

WANG Nuo, DAI Yi-min. Performance Analysis of UQPSK Carrier Acquisition and Tracking Algorithm in Satellite Communications[J]. Acta Electronica Sinica, 2004, 32(7): 1219-1222. DOI：

摘要

非平衡QPSK(UQPSK)是通过对QPSK载波的两个正交分量分配不同的功率

以达到同时传输两种不同类型及速率的二进制比特流数据的一种调制模式

现在主要用于卫星数字通信

如跟踪与数据中继卫星系统(TDRSS)以及全球定位系统(GPS).本文针对TDRSS的S波段前向链路采用的UQPSK直接序列扩频调制

提出其中频载波恢复算法的改进设计

并给出了全数字化方案的性能和理论分析.最后基于FPGA实现的方案及性能证明了算法的有效性.

Abstract

An UNBALANCED QPSK (UQPSK) signal format is a QPSK signal where the two orthogonal components of the carrier have unequal power and are modulated with independent binary data streams of different rates.This transmission scheme is most useful when the data of two different sources with possibly varying rates have to be transmitted in the same frequency band.This signal design was used in the Tracking and Data Relay Satellite System (TDRSS) and the Navigation Satellite Timing and Ranging Global Positioning System (NAVSTAR GPS).To suit for the UQPSK-DS-SS adopted in S

Band forward link of TDRSS

this paper introduces a whole digital implementation of TDRSS IF carrier acquisition and tracking system.Finally we give its full implementation on FPGA and the performance

experimental and analytical results agree with each other very well.

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Related Institution

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