高阶调制APSK信号载波同步算法研究  

Carrier Synchronization Algorithm Research for High-order Modulated APSK Signal

作　　者：胡景明[1] 郭道省[1] 王辉[2] 

机构地区：[1]解放军理工大学通信工程学院,南京210007 [2]解放军海军指挥学院,南京210007

出　　处：《计算机科学》2013年第06A期239-242,250,共5页Computer Science

摘　　要：随着卫星通信业务的发展,卫星宽带高速数据通信变得越来越重要,使得高阶调制技术逐渐应用于卫星通信中,但载波频偏对诸如APSK等高阶调制信号的影响很大,其多个幅度也使得载波同步更加复杂。在回顾载波同步算法理论的基础上,分析了载波频率和相位偏差对APSK信号系统的影响,并研究了载波频率和相位偏差的估计算法。分析表明,算法可有效地解决APSK信号多幅度和相位模糊较大的问题,可较好地适用于APSK信号的载波频率和相位同步。With the development of satellite communication services, satellite broadband high-speed data communication is becoming more and more important, higher order modulation technology is increasingly used in satellite communications, but the carrier frequency offset the impact of higher order modulation signals, such as APSK. its various amplitudes also make carrier synchronization more complicated. Review carrier synchronization algorithm theory based on the carrier frequency and phase deviation APSK signal system, and to study the carrier frequency and phase offset estimation algorithm, analysis shows that the algorithm can effectively solve the APSK signal multi-amplitude and phase Fuzzy large problems, and can be preferably applicable to the the APSK signal carrier frequency and phase synchronization.

关 键 词：载波同步 APSK 相位模糊 NDA算法 DDA算法 

分 类 号：TN927[电子电信—通信与信息系统] TN76[电子电信—信息与通信工程]