多径衰落信道下OFDM系统的低复杂度定时同步与信道估计

2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications Pub Date : 2008-09-05 DOI:10.1109/ISSSTA.2008.123

A. Zahedi, M. Noroozi, H. Bakhshi

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引用次数: 0

摘要

本文提出了一种在OFDM系统中实现符号同步的方法。该方法使用两个阶段进行符号同步。在第一阶段，我们使用基于保护间隔的相关进行符号同步。第二阶段，采用导频子载波和线性插值方法进行信道估计，提高传输数据的估计精度。计算机仿真结果表明，该方法在AWGN和多径衰落信道下均能有效地降低OFDM系统的码误率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Low Complexity Timing Synchronization and Channel Estimation in OFDM Systems over Multipath Fading Channels

In this paper, we present a method for performing symbol synchronization in OFDM systems. This method uses two stages for symbol synchronization. In the first stage, we use guard interval based correlation for symbol synchronization. In the second stage, we use pilot subcarriers and linear interpolation method for channel estimation to improve the estimation accuracy of the transmitted data. Computer simulations show that this method works properly over both AWGN and multipath fading channels and reduces symbol error rate (SER) of OFDM systems.

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2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications

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