Robust frequency and timing synchronization for OFDM

被引：2315

作者：

Schmidl, TM ^{[1
]}

Cox, DC ^{[1
]}

机构：

[1] STANFORD UNIV, DEPT ELECT ENGN, STANFORD, CA 94305 USA

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 1997年 / 45卷 / 12期

基金：

美国国家科学基金会;

关键词：

carrier frequency; orthogonal frequency-division multiplexing; symbol timing estimation;

D O I：

10.1109/26.650240

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A rapid synchronization method is presented for an orthogonal frequency-division multiplexing (OFDM) system using either a continuous transmission or a burst operation over a frequency-selective channel, The presence of a signal can be detected upon the receipt of just one training sequence of two symbols, The start of the frame and the beginning of the symbol can be found, and carrier frequency offsets of many subchannels spacings can be corrected, The algorithms operate near the Cramer-Rao lower bound for the variance of the frequency offset estimate, and the inherent averaging over many subcarriers allows acquisition at very low signal-to-noise ratios (SNR's).

引用

页码：1613 / 1621

页数：9

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