OFDM系统中帧同步算法改进研究  

Research on Improvement of Frame Synchronization Algorithm in OFDM System

作　　者：李月 杨春兰 许振 LI Yue;YANG Chunlan;XU Zhen(No.722 Research Institute of China Shipbuilding Industry Corporation,Wuhan 430200)

机构地区：[1]中国船船重工集团公司第七二二研究所,武汉430200

出　　处：《舰船电子工程》2020年第9期71-74,共4页Ship Electronic Engineering

摘　　要：为了减小直流噪声对正交频分复用(OFDM)系统接收机性能的影响,在原有基于训练序列的帧同步算法的基础上增加了半周期延迟相关值与能量值之比作为判决变量,仿真表明,该算法能够很好地抵抗直流噪声的干扰,并能够明显地提高同步成功的概率。In order to reduce the influence of the DC noise on the performance of the OFDM system receiver,the ratio of semi-period delay correlation value to energy value is used as the decision variable to ameliorate the original frame synchronization algorithm according the feature of the training sequence.The simulation shows that the algorithm can resist the interference of DC noise well and improve the probability of correctly synchronization significantly.

关 键 词：训练序列 正交频分复用 帧同步算法 

分 类 号：TN929.5[电子电信—通信与信息系统]