Observations on the Effects of Pulse Noise in Digital Data Transmission Systems

M. Kurland, D. Molony
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引用次数: 7

Abstract

This paper presents some observations concerning the type of variability one might encounter in determining error rates in digital data transmission systems subjected to impulse noise. The effects of pulse shape and duration are investigated. It is shown that for signal-to-noise ratios (SNR) greater than -5 dB, a variation of 8 to 1 in the average number of errors per pulse might be encountered as pulse shape is varied. For pulsewidths in the range 0.1 to 4 ms, a variation of 6 to 1 in the average number of errors, per pulse at a given SNR could be expected. Experimental findings relating error rates to pulse duration were supported by analytical studies. The probability of making an error, given that a noise burst has occurred, is determined and a worst case analysis is made, from which a critical SNR is found such that if the noise is below this threshold, no errors can occur. It is recognized that the limitations imposed by the equipment available for study results in a loss in generality. However, the results presented are indicative of the type of variations one might encounter in the case of actual impulse noise on an existing practical system.
数字数据传输系统中脉冲噪声影响的观察
本文提出了一些关于在确定受脉冲噪声影响的数字数据传输系统的错误率时可能遇到的可变性类型的观察结果。研究了脉冲形状和脉冲持续时间的影响。结果表明,对于大于-5 dB的信噪比(SNR),随着脉冲形状的变化,每个脉冲的平均误差数可能会发生8比1的变化。对于0.1到4ms范围内的脉冲宽度,在给定信噪比下,每个脉冲的平均误差数变化为6比1。有关错误率与脉冲持续时间的实验结果得到了分析研究的支持。假设发生了噪声突发,则确定产生错误的概率,并进行最坏情况分析,从中找到一个临界信噪比,如果噪声低于该阈值,则不会发生错误。人们认识到,可用于研究的设备所施加的限制导致了总体上的损失。然而,所提出的结果表明了在现有实际系统的实际脉冲噪声情况下可能遇到的变化类型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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