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时间同步是Chirp超宽带通信系统的主要挑战之一。文章通过对直接调制方式下同步误差对系统误码率的影响进行分析,证明随着时间带宽积的增大,对同步算法的精度提出了更高的要求。而常用同步算法对噪声很敏感,文章利用干扰抑制的思想提出了一种新的同步算法。由于利用干扰抑制提高了信噪比,文章算法跟常用算法相比,可以使系统性能有较大提高。
Time synchronization is one of the major challenges for Chirp’s ultra-wideband communications systems. By analyzing the influence of the synchronization errors under the direct modulation mode on the system BER, it is proved that the accuracy of the synchronization algorithm poses higher requirements as the time bandwidth product increases. The commonly used synchronization algorithm is very sensitive to noise. In this paper, a new synchronization algorithm is proposed based on the idea of interference suppression. As the use of interference suppression to improve the signal to noise ratio, the article algorithm compared with the commonly used algorithm, you can make the system performance has greatly improved.