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Efficient Sampling of Bacterial Signal Transduction for Detection of Pulse-Amplitude Modulated Molecular Signals

机译:细菌信号转导的高效采样,用于检测脉冲幅度调制的分子信号

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摘要

The sampling of the bacterial signal transduction is investigated for molecular communication (MC). It is assumed that the finite-duration amplitude modulated, i.e., pulse-amplitude modulated (PAM), concentration of a certain type of molecule is used for information transmission. The bacterial signaling pathway is modified to transduce the input molecules to the output signal, i.e., produce green fluorescent protein (GFP). The bacterial signal transduction is composed of a set of biochemical reactions which impose randomness on the response. Therefore, the input-output relation, the timing issues, and the noise effects for the bacteria response are characterized based on both analytical and experimental observations. Sampling schemes for the raw bacteria response are proposed based on the total response duration, the peak value, the ramp-up slope, and the ramp-down slope. Each sampling scheme is shown to be providing a one-to-one and monotonic function of the input. The sampling based on the ramp-up slope is shown to be statistically favorable for the detection of PAM molecular signals. Accordingly, the time interval selection and non-coherent sampling are studied for the efficient calculation of the ramp-up slope from the raw bacteria response. This work provides a basis for the sampling of the raw bacteria response and enables accurate detection of PAM molecular signals via bacterial response for MC and sensing applications.
机译:细菌信号转导的采样进行了分子通讯(MC)研究。假定将某种类型的分子的有限持续时间的幅度调制,即脉冲幅度调制(PAM)的浓度用于信息传输。修饰细菌信号传导途径以将输入分子转导至输出信号,即产生绿色荧光蛋白(GFP)。细菌信号转导由一组生化反应组成,这些反应将随机性强加给响应。因此,基于分析和实验观察来表征输入-输出关系,时间问题以及细菌响应的噪声影响。根据总响应时间,峰值,上升斜率和下降斜率,提出了对原始细菌响应的采样方案。每种采样方案都显示为提供输入的一对一和单调函数。结果表明,基于斜率的采样在统计学上有利于检测PAM分子信号。因此,对时间间隔选择和非相干采样进行了研究,以根据原始细菌的响应有效地计算斜率。这项工作为原始细菌反应的采样提供了基础,并通过细菌反应为MC和传感应用准确检测PAM分子信号。

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