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Modeling of CNR Characteristics under Bandwidth Limitation on Transmission Systems Employing Optical Super Wide-band FM Technique

机译:利用光学超宽带FM技术的带宽受限的传输系统CNR特性建模

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With regards to an optical transmission system employing the optical super wide-band FM technique, which realizes multichannel video distribution on existing optical access networks, this paper examines the bandwidth limitation on the wide-band FM signal as a factor of CNR degradation theoretically and experimentally. The required bandwidth for an FM signal has been estimated by the Komai-Carson law, but there have been few studies of the quantitative relationship between that bandwidth and the amount of CNR degradation. To analyze such CNR degradation, we proposed a model for bandwidth limitation on the wide-band FM signal with the "equivalent noise pulse." The CNR theory on our proposed model can explain the actual CNR characteristics with bandwidth limitation. The results show that the bandwidth required is more than four times the standard deviation of the FM spectrum in order to maintain the CNR degradation of less than 1 dB.
机译:对于采用光学超宽带FM技术的光传输系统,该技术可以在现有的光接入网络上实现多通道视频分发,本文从理论和实验上研究了宽带FM信号的带宽限制,这是CNR衰减的一个因素。 。 FM信号所需的带宽已通过Komai-Carson法则进行了估算,但是很少有人研究该带宽与CNR衰减量之间的定量关系。为了分析这种CNR降级,我们提出了一个具有“等效噪声脉冲”的宽带FM信号带宽限制模型。我们提出的模型的CNR理论可以解释带宽受限的实际CNR特性。结果表明,为了保持CNR降级小于1 dB,所需的带宽是FM频谱标准偏差的四倍以上。

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