基于多重周期训练序列的OFDM系统同步技术研究

Methods and Analysis oi OFDM bynchronization Based on a Multi-periodic Preamble

为了提高OFDM系统性能，本文分析研究了一种多周期训练序列的OFDM同步算法。与常规算法不同的是，多周期训练序列可以独立选择相关偏移和窗长度这两种参数，这就增加了载波偏移估计的准确度，并减少了随机噪声对同步的影响，可以改善系统性能。

In order to improve the OFDM system performance, this paper investigates the application of a multiperiodic preamble for the synchronization in OFDM systems. Being different from common algorithm, the multiperiodic preamble can select independently the correlation offset and window length parameters. This increases the aeeuraery of carrier offset estimation, reduces the impact of random noise on synchronization and thus imporyes the whole system performance.