Matched Filter-Autocorrelation (MF-AC) for Packet Detection in Multipath Channels

Matched Filter-Autocorrelation (MF-AC) for Packet Detection in Multipath Channels
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用于多路径信道中数据包检测的匹配滤波器自相关 (MF-AC)

DOI:
10.1109/lcomm.2013.062113.130940
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发表时间:
2013-07
期刊:
IEEE Communications Letters
影响因子:
--
通讯作者:
Ning Ge
Ning Ge
中科院分区:
其他
文献类型:
--
作者:
Zhenyu Xiao;Depeng Jin;Ning Ge

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在本研究中,我们研究了多路径环境下的突发包检测。传统的探测器要么不能收集多径能量,要么在收集时合并太多的噪声。因此,它们的性能会下降。针对这一问题,提出了一种级联匹配滤波-自相关(MF-AC)检测器。通过利用MF,多径能量首先在等于多径延迟扩展的小窗口内收敛;随后,自相关器将该窗口内的多径能量合并。因此,缩短了合并窗口,并降低了合并噪声。性能比较表明,MF-AC检测器的性能明显优于传统检测器,其优势依赖于多径时延扩展。
In the present study, we investigate burst packet detection in multipath environment. Conventional detectors either cannot collect multipath energy, or combine too much noise when collecting it. Thus, they suffer performance degradation. A cascaded matched filter-autocorrelation (MF-AC) detector is proposed to address this problem. By exploiting a MF, the multipath energy is first converged within a small window equal to the multipath delay spread; subsequently, the autocorrelator combines the multipath energy within this window. Therefore, the combination window is shortened, and the combined noise is reduced. Performance comparisons show that MF-AC achieves a significantly better performance than the conventional detectors, with the superiority depending on the multipath delay spread.
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