Decision-directed fine synchronization in OFDM systems

被引：92
|
作者：
Shi, K [1 ]
Serpedin, E
Ciblat, P
机构：
[1] Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA
[2] Ecole Natl Super Telecommun Bretagne, Dept Commun & Electron, F-75013 Paris, France
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2005年 / 53卷 / 03期
基金：
美国国家科学基金会;
关键词：
carrier frequency offset (CFO); fast Fourier transform (FFT); orthogonal frequency-division multiplexing (OFDM); sampling clock frequency offset (SFO); synchronization;
D O I：
10.1109/TCOMM.2005.843463
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 new decision-directed (DD) synchronization scheme is proposed for joint estimation of carrier frequency offset (CFO) and sampling clock frequency offset (SFO) in orthogonal frequency-division multiplexing (OFDM) systems. By exploiting the hard decisions, we report accurate estimators of residual CFO and small SFO. The performance analysis and simulation results indicate that the proposed novel DD scheme achieves much better performance than the conventional pilot-based schemes in both additive white Gaussian noise and frequency-selective channels.
引用
收藏
页码：408 / 412
页数：5
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