Novel Coding for PON Fault Identification
Novel Coding for PON Fault Identification
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DOI：
10.1109/lcomm.2011.041811.101805
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发表时间：
2011-04
期刊：
影响因子：
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通讯作者：
M. Esmail;H. Fathallah
中科院分区：
文献类型：
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作者：
M. Esmail;H. Fathallah
在本文中，我们提出了一种新的简单的周期性光编码器的光纤到X（FTTX）的无源光网络（脑桥）的集中故障监测。该光学编码器利用每个分配/分出光纤具有不同长度的光纤环来产生不同的周期性代码。这降低了监控系统的成本，同时保持了良好的性能和高容量。我们调查的编码为基础的监测系统的设计问题，并评估其性能的信号噪声比（SNR），虚警概率（PFA）和误检概率（PMD）。在一次测量中，我们对32个用户的网络获得了12.5dB的SNR。通过多次重复测量，我们以更长的测量时间为代价实现了64到256的容量。此外，该系统在4 ms内完成了64个用户网络中PFA= 10-6的PMD <2 *10-9。
In this paper we propose a novel simple periodic optical encoder for centralized fault monitoring of fiber-to-the-X (FTTX) passive optical networks (PONs). This optical encoder exploits a fiber ring with a different length for each distribution/drop fiber to produce a different periodic code. This reduces the cost of monitoring system while maintains good performance and high capacity. We investigate the design issues of this coding based monitoring system and evaluate its performance in terms of signal to noise ratio (SNR), probability of false alarm (PFA) and probability of misdetection (PMD). We obtain an SNR of 12.5dB for a 32 customers network in one shot measurement. By repeating the measurement multiple times we achieve a capacity of 64 to 256 in expense of longer measurement time. Moreover, the system accomplishes a PMD ≈ 2 *10-9 for a PFA= 10-6 in a 64 customers network in 4ms.