An advanced OFDM time synchronization scheme

SPIE ITCom Pub Date : 2003-11-19 DOI:10.1117/12.509426
S. Park, Sammo Cho, Bong-Ho Lee, Y. Hahm, S. Lee
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Abstract

We propose an advanced time synchronization scheme with additional pre-processor for OFDM systems. The proposed pre-processor scheme makes symbol synchronization and guard-interval length detection possible, even though there is no guard-interval length information. This pre-processor is so useful in the systems like DVB-T, which have several kinds of guard-interval lengths. Simulation results show that the proposed scheme gives satisfactory performance in the guard-interval length detection and the OFDM symbol synchronization over AWGN.
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一种先进的OFDM时间同步方案
针对OFDM系统,提出了一种带附加预处理器的时间同步方案。所提出的预处理方案使符号同步和保护间隔长度检测成为可能,即使没有保护间隔长度信息。这种预处理器在像DVB-T这样的系统中非常有用,它有几种保护间隔长度。仿真结果表明,该方案在AWGN上的保护间隔长度检测和OFDM码元同步方面取得了满意的效果。
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