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An efficient two-step approach to integer frequency offset detection for OFDM systems

被引：1
|
作者：
Kim, Jeongchang [2 ]
Cheun, Kyungwhoon [1 ]
机构：
[1] Pohang Univ Sci & Technol POSTECH, Div Informat Technol Convergence Engn, Pohang, South Korea
[2] Korea Maritime Univ, Dept Elect & Commun Engn, Pusan, South Korea
来源：
SIGNAL PROCESSING | 2012年 / 92卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
Detection; Expanding window search; Integer frequency offset; Orthogonal frequency division multiplexing; Preamble; SPECTRUM CODE ACQUISITION; SYNCHRONIZATION; PERFORMANCE; SENSITIVITY; ESTIMATOR; CHANNELS; CARRIER;
D O I：
10.1016/j.sigpro.2011.09.011
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：
An efficient preamble structure for OFDM systems is proposed which inserts a short embedded repetition pattern (SERP) into conventional preamble structures allowing a two-step detection of the integer frequency offset (IFO). A coarse estimate of the IFO using the SERP is performed in the time domain prior to performing fine IFO detection in the frequency domain based on the original preamble structure. The complexity of the overall IFO detection procedure can be significantly reduced at a price of slight loss in SNR. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：698 / 704
页数：7
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