一种改进的OFDMA载波盲同步方法  

An Improved Method of OFDMA Carrier Blind Synchronization

作　　者：脱永军 

机构地区：[1]中国电子科技集团公司第30研究所,成都610041

出　　处：《舰船电子对抗》2015年第5期39-42,67,共5页Shipboard Electronic Countermeasure

摘　　要：载波的盲同步算法对于正交频分复用多址接入(OFDMA)非合作接收系统是非常重要的。载波的盲同步算法包括了对载波的频偏盲估计和频率校正,对于OFDMA信号的非合作方式解调具有关键作用。研究了一种改进的载波盲同步方法,分析了算法原理,构建了算法模型,在现场可编程门阵列(FPGA)芯片上验证了其功能。测试结果和性能仿真曲线表明,该方法性能优于传统方法,能有效地利用芯片资源,为实际工程应用起到重要参考作用。The blind synchronization algorithm of carrier is very important for orthogonal frequency division multiple access（OFDMA）non-cooperative receiving system.The blind synchronization algorithm of carrier includes frequency deviation blind estimation and frequency correction to carrier,which has key role for the demodulation of non-cooperative mode of OFDMA signal.This paper studies an improved blind synchronization algorithm of carrier,analyzes the algorithm theory,constructs the algorithm model,and validates its function through field programmable gate array（FPGA）.The test result and performance simulation curve show that the performance of this method is better than traditional methods,can make good use of the chip resource,plays the important reference role for actual engineering application.

关 键 词：正交频分复用多址接入 载波盲同步 算法实现 现场可编程门阵列 

分 类 号：TN918.91[电子电信—通信与信息系统]