一种多径信道下OFDM符号定时算法  

Study on OFDM frame synchronization in multipath channel

作　　者：宫芳[1] 方扬扬 孔挺[2] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001 [2]海军飞行学院教研部,辽宁葫芦岛125001

出　　处：《哈尔滨商业大学学报（自然科学版）》2013年第2期205-207,共3页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：针对正交频分复用系统(OFDM)对同步偏差的敏感性,提出一种新的数据辅助算法.该算法通过利用Schmidl&Cox训练序列,重新设计定时测度函数,有效地克服了传统数据辅助型算法的缺陷.通过仿真表明,该算法可以有效的改进传统算法在多径信道下性能.In order to overcome the serious influence of synchronization offset on OFDM sys- tems, a novel synchronization algorithm for OFDM systems was proposed. The method used the Schmidl＇ s preamble and proposes a new timing metric. The proposed method timing al- gorithm eliminated the defect in conventional method effectively. The performances of the frame synchronization methods in multipath channel were compared in terms of MSE obtained by simulations. It could be seen from the simulation result results that the proposed methods had the better performances than conventional methods.

关 键 词：正交频分复用 符号定时 训练序列 多径信道 均方误差 

分 类 号：TN919[电子电信—通信与信息系统]