OFDM载波频率偏差及样值定时偏差分析与仿真  

Analysis and Emulation of Carrier Frequency Offset and Sampling Timing Error for the OFDM System

作　　者：陈伟儒[1] 湛兴祥[1] 苏莹[1] 

机构地区：[1]兰州理工大学计算机与通信学院,甘肃兰州730050

出　　处：《甘肃科学学报》2012年第1期69-71,共3页Journal of Gansu Sciences

基　　金：甘肃省自然科学基金(0809RJZA019)

摘　　要：针对OFDM系统同步误差的数学模型进行了研究,对载波频率偏差和样值定时偏差作了重点分析,同时运用MATLAB仿真对这两种同步偏差进行了直观的分析,从而得出当OFDM系统中出现同步偏差时子载波的正交性将受到影响,同时系统性能也将明显地恶化.The mathematical models of synchronization errors for the OFDM system were analyzed and studied.Our focus was on the analysis of carrier frequency offset and sampling timing error.MATLAB simulation was used to carry on the visual analysis of the two synchronization errors.It is concluded that the orthogonality of subcarriers will be affected when there are synchronization errors in the OFDM system,and its performance will also be deteriorated.

关 键 词：OFDM 载波频率偏差 样值定时偏差 循环前缀 

分 类 号：TN919.3[电子电信—通信与信息系统]