OFDM系统中定时偏移的估计技术  

Timing off-set estimation for OFDM system

作　　者：阮象华[1] 徐德军[1] 

机构地区：[1]南京邮电学院信息工程系,江苏南京210003

出　　处：《电视技术》2001年第11期29-31,共3页Video Engineering

摘　　要：在T.M.Schmidl和D.C.Cox提出的解决正交频分多路复用(OFDM)系统定时同步的基础上,给出了两种改进算法。在加性高斯白噪声信道(AWGN)和存在符号间干扰(ISI)的两种信道中,分别对估值进行比较,这两种改进算法得到估值的方差要小得多。Two timing offset estimation methods for orthogonal frequency division multiplexing(OFDM)sys-tem as modifications to T.M.Schmidl and D.C.Cox's method are presented.The performance of the timing offset es-timators in additive white Gaussian noise channel and intersymbol interference channel are compared in terms of estimation variance by simulation.Both proposed methods have smaller estimation variance in both channel condi-tions.[

关 键 词：正交频分多路复用 定时偏移 定时同步 通信系统 

分 类 号：TN914[电子电信—通信与信息系统]