OFDM/OQAM和OFDM/QAM调制的全同步方法

2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications Pub Date : 2008-09-05 DOI:10.1109/ISSSTA.2008.69

B. Jahan, M. Lanoiselée, G. Degoulet, R. Rabineau

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引用次数: 9

摘要

本文介绍了一种利用频域时域散射导频实现OFDM/OQAM和OFDM/QAM调制全同步的方法。大多数基于OFDM的标准提供这种已知导频，主要用于信道估计目的。利用调制后的接收信号与离散导频序列的时间表示之间的时域复相关结果，首先进行时钟采样和符号同步，然后进行频率同步，最后进行帧同步(如果特别注意散射导频的定义)。对相关操作的复杂度进行了优化，并进行了碎片化处理，对频率偏移具有更好的鲁棒性。这种全同步方法带来了令人满意的性能，并在新的DVB-T2标准中得到了早期的应用，用于传统的OFDM调制。

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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Full Synchronization Method for OFDM/OQAM and OFDM/QAM Modulations

This paper describes a full synchronization method for OFDM/OQAM and OFDM/QAM modulations utilizing frequency domain scattered pilots in the time domain. Most of the OFDM based standards provide this kind of known pilots mainly for channel estimation purposes. The time domain complex correlation results between the modulated received signal and the time representation of the scattered pilots sequence are successively exploited to perform first clock sampling and symbol synchronization, then frequency synchronization and finally frame synchronization (if specific attention is paid to scattered pilots definition). Correlation operation is optimized in complexity and is fragmented for a better robustness to frequency offsets. This full synchronization method brings really satisfactory performance and has already found an early application in the new DVB-T2 standard, for conventional OFDM modulation.

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

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